Fix WhatsApp group access when senders are opaque LIDs.

Resolve LID to phone aliases before allowlist and @mention checks so
group prompts are not silently dropped after a working direct chat.

Co-authored-by: Cursor <cursoragent@cursor.com>

test/channels/shared/text-harness-bridge.test.mjs

@@ -158,6 +158,7 @@ function createBridge({
   signal,
   logger,
   reactions,
+  groupSessionScope = 'chat',
 } = {}) {
   return new TextHarnessBridge({
     descriptor: { key: 'test', label: 'Test', reactions },
@@ -166,6 +167,7 @@ function createBridge({
     state,
     signal,
     logger: logger ?? { warn() {}, error() {} },
+    groupSessionScope,
   });
 }