Revert "Rename one test to resolve conflict in two way sync (#32536)" (#32584)

This reverts commit 2db1d05bfa03c7a217314aefc41749ff31959267.
diff --git a/css/selectors/has-specificity-01.html b/css/selectors/has-specificity.html
similarity index 100%
rename from css/selectors/has-specificity-01.html
rename to css/selectors/has-specificity.html