[Build] Make remaining targets compatible with 'enforce_resource_overlays'

This CL:
- Sets resource_overlay=true in //weblayer:components_java_strings to
indicate that the target duplicates resources in
//components/strings:components_locale_settings
- Renames
android_webview/nonembedded/java/res_devui/drawable/ic_search.xml as the
resource conflicts with R.drawable.ic_search

BUG=1093825

Change-Id: Ica9c2335fdf688bec594f842e617e82e1a826773
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2389229
Commit-Queue: Peter Kotwicz <pkotwicz@chromium.org>
Reviewed-by: Mohamed Heikal <mheikal@chromium.org>
Reviewed-by: Bo <boliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805181}
GitOrigin-RevId: 5a3468d7f408eda7fb07f8979ea3b7b22c5ec817

config/android/rules.gni

@@ -1242,6 +1242,7 @@ if (enable_java_templates) {
     }
 
     android_generated_resources(target_name) {
+      forward_variables_from(invoker, [ "resource_overlay" ])
       generating_target_name = ":$_zip_target_name"
       generated_resources_zip = _resources_zip
     }