Enable HelpAppSearchServiceIntegration by default.

Targeted for M89, launch bug crbug/1104668

Bug: b/174514210
Change-Id: Ica81eef4d720142a1725b105da5159ce46873e9b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2583586Reviewed-by: dstockwell <dstockwell@google.com>
Commit-Queue: Rachel Carpenter <carpenterr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#835831}

chromeos/constants/chromeos_features.cc

@@ -402,7 +402,7 @@ const base::Feature kHelpAppFirstRun{"HelpAppFirstRun",
 
 // Enable the search service integration in the Help app.
 const base::Feature kHelpAppSearchServiceIntegration{
-    "HelpAppSearchServiceIntegration", base::FEATURE_DISABLED_BY_DEFAULT};
+    "HelpAppSearchServiceIntegration", base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enable or disable IME decoder via Mojo connection on Chrome OS.
 const base::Feature kImeMojoDecoder{"ImeMojoDecoder",