Add option to reposition the expand thread button (CC)

This option repositions the expand thread button all the way to the left
of the thread element in thread lists (Community Console). Originally,
this button is shown in the right.

Requested at pekb/thread/67965396?msgid=91547227.

Change-Id: I10cd62998f6165ec58705fd912089119a7e0a108
diff --git a/templates/manifest.gjson b/templates/manifest.gjson
index 72126b9..5a91bdf 100644
--- a/templates/manifest.gjson
+++ b/templates/manifest.gjson
@@ -71,7 +71,8 @@
         "injections/profileindicator_inject.css",
         "injections/ccdarktheme.css",
         "injections/batchlock_inject.js",
-        "injections/enhanced_announcements_dot.css"
+        "injections/enhanced_announcements_dot.css",
+        "injections/reposition_expand_thread.css"
 #if defined(CHROMIUM_MV3)
       ],
       "matches": [