Make expected command value of "formatBlock" always empty string if expecting indeterm state

If selections crosses multiple format block types,
`Document.queryCommandIndeterm("formatBlock")` should return `true`.  In this
case, `Document.queryCommandState("formatBlock")` should always return `""`
since the value is mixed, thus, indeterminable.

Differential Revision: https://phabricator.services.mozilla.com/D192184

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1861910
gecko-commit: 925231a8fb5eccf055afb3e9921596d8f990128b
gecko-reviewers: m_kato
diff --git a/editing/data/formatblock.js b/editing/data/formatblock.js
index 6efd466..bd559b30 100644
--- a/editing/data/formatblock.js
+++ b/editing/data/formatblock.js
@@ -239,12 +239,12 @@
     [["defaultparagraphseparator","div"],["formatblock","<div>"]],
     "<div>[foo</div><div>bar]</div>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"dl",false,false,"div"]}],
+    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[false,false,"dl",false,false,"div"]}],
 ["<dl><dt>[foo<dd>bar]</dl>",
     [["defaultparagraphseparator","p"],["formatblock","<div>"]],
     "<div>[foo</div><div>bar]</div>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"dl",false,false,"div"]}],
+    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[false,false,"dl",false,false,"div"]}],
 ["<ol><li>[foobar]</ol>",
     [["defaultparagraphseparator","div"],["formatblock","<div>"]],
     "<ol><li><div>[foobar]</div></li></ol>",
@@ -1735,12 +1735,12 @@
     [["defaultparagraphseparator","div"],["formatblock","<h1>"]],
     "<h1>[foo<br>bar]</h1>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"p",false,false,"h1"]}],
+    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"",false,false,"h1"]}],
 ["<p>[foo</p>bar]",
     [["defaultparagraphseparator","p"],["formatblock","<h1>"]],
     "<h1>[foo<br>bar]</h1>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"p",false,false,"h1"]}],
+    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"",false,false,"h1"]}],
 ["[foo<p>bar]</p>",
     [["defaultparagraphseparator","div"],["formatblock","<h1>"]],
     "<h1>[foo<br>bar]</h1>",
@@ -1805,32 +1805,32 @@
     [["defaultparagraphseparator","div"],["formatblock","<div>"]],
     "<div>[foo</div><div>bar]</div>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"p",false,false,"div"]}],
+    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"",false,false,"div"]}],
 ["<p>[foo<h1>bar]</h1>",
     [["defaultparagraphseparator","p"],["formatblock","<div>"]],
     "<div>[foo</div><div>bar]</div>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"p",false,false,"div"]}],
+    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"",false,false,"div"]}],
 ["<h1>[foo</h1><h2>bar]</h2>",
     [["defaultparagraphseparator","div"],["formatblock","<div>"]],
     "<div>[foo</div><div>bar]</div>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"h1",false,false,"div"]}],
+    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"",false,false,"div"]}],
 ["<h1>[foo</h1><h2>bar]</h2>",
     [["defaultparagraphseparator","p"],["formatblock","<div>"]],
     "<div>[foo</div><div>bar]</div>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"h1",false,false,"div"]}],
+    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"",false,false,"div"]}],
 ["<div>[foo</div>bar]",
     [["defaultparagraphseparator","div"],["formatblock","<div>"]],
     "<div>[foo</div><div>bar]</div>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"div",false,false,"div"]}],
+    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"",false,false,"div"]}],
 ["<div>[foo</div>bar]",
     [["defaultparagraphseparator","p"],["formatblock","<div>"]],
     "<div>[foo</div><div>bar]</div>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"div",false,false,"div"]}],
+    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"",false,false,"div"]}],
 ["<div style=color:blue>[foo]</div>",
     [["stylewithcss","true"],["defaultparagraphseparator","div"],["formatblock","<p>"]],
     "<p style=\"color:rgb(0, 0, 255)\">[foo]</p>",
@@ -1855,12 +1855,12 @@
     [["defaultparagraphseparator","div"],["formatblock","<h1>"]],
     "<h1>{foo<br>ba]r</h1>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"p",false,false,"h1"]}],
+    {"defaultparagraphseparator":[false,false,"p",false,false,"div"],"formatblock":[true,false,"",false,false,"h1"]}],
 ["{<p>foo</p>ba]r",
     [["defaultparagraphseparator","p"],["formatblock","<h1>"]],
     "<h1>{foo<br>ba]r</h1>",
     [true,true],
-    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"p",false,false,"h1"]}],
+    {"defaultparagraphseparator":[false,false,"div",false,false,"p"],"formatblock":[true,false,"",false,false,"h1"]}],
 ["<div><div contenteditable=false><span contenteditable>[foo]</span></div></div>",
     [["formatblock","p"]],
     "<div><div contenteditable=\"false\"><span contenteditable=\"\">[foo]</span></div></div>", // <span> cannot have <p>, so, do nothing