[iOS][Omnibox] Enable rich inline autocomplete

Enable rich inline autocomplete on iOS by default.
All the parameters are using their default values.

https://source.chromium.org/chromium/chromium/src/+/main:ios/chrome/browser/ui/omnibox/omnibox_ui_features.cc;l=46;drc=4cdf2f7f12bd7b456240f819f5808d2f28a0e96c

Bug: None
Change-Id: Idcef18203613f52bf10e791ef18354d8517e90ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5836689
Auto-Submit: Christian Xu <christianxu@chromium.org>
Reviewed-by: manuk hovanesian <manukh@chromium.org>
Commit-Queue: Christian Xu <christianxu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1351426}
diff --git a/components/omnibox/common/omnibox_features.cc b/components/omnibox/common/omnibox_features.cc
index aa750a9a..3d9879b 100644
--- a/components/omnibox/common/omnibox_features.cc
+++ b/components/omnibox/common/omnibox_features.cc
@@ -273,7 +273,7 @@
 // accommodate the autocompletions.
 BASE_FEATURE(kRichAutocompletion,
              "OmniboxRichAutocompletion",
-             enabled_by_default_desktop_only);
+             enabled_by_default_desktop_ios);
 
 // Feature used to enable Pedals in the NTP Realbox.
 BASE_FEATURE(kNtpRealboxPedals,