Set $wgIncludejQueryMigrate to false as default

Bug: T280944
Change-Id: I02a3e4f4a2b596ff2741436884b2ef9a4b2b9177

RELEASE-NOTES-1.37

@@ -51,6 +51,9 @@ of automatic detection of possible phone numbers in a webpage in Safari on iOS.
   WikiPage::getActionOverrides().
 * $wgShellboxUrl is deprecated, use $wgShellboxUrls as a mapping of
   service => URL instead.
+* $wgIncludejQueryMigrate Default value for this configuration has changed
+  from true to false. This may break gadgets that depended on methods removed
+  in jQuery 3. See T280944 for more information.
 * …
 
 ==== Removed configuration ====

includes/DefaultSettings.php

@@ -4470,7 +4470,7 @@ $wgIncludeLegacyJavaScript = false;
  *
  * @deprecated since 1.36
  */
-$wgIncludejQueryMigrate = true;
+$wgIncludejQueryMigrate = false;
 
 /**
  * ResourceLoader will not generate URLs whose query string is more than

includes/DevelopmentSettings.php

@@ -104,6 +104,3 @@ $wgEnableUploads = true;
 $wgVisualEditorEnableWikitext = true;
 // Currently the default, but repeated here for safety since it would break many source editor tests.
 $wgDefaultUserOptions['visualeditor-newwikitext'] = 0;
-
-// Do not enable jquery migrate in CI (T280944)
-$wgIncludejQueryMigrate = false;