revert single channel click (#7738)

- Revert "collab tweaks (#7706)"
- Revert "2112 (#7640)"
- Revert "single click channel (#7596)"
- Reserve protobufs
- Don't revert migrations

Release Notes:

- N/A

**or**

- N/A

crates/collab/src/db/tests/channel_tests.rs

@@ -138,7 +138,6 @@ async fn test_joining_channels(db: &Arc<Database>) {
         .join_channel(
             channel_1,
             user_1,
-            false,
             ConnectionId { owner_id, id: 1 },
             TEST_RELEASE_CHANNEL,
         )
@@ -733,15 +732,9 @@ async fn test_guest_access(db: &Arc<Database>) {
         .await
         .is_err());
 
-    db.join_channel(
-        zed_channel,
-        guest,
-        false,
-        guest_connection,
-        TEST_RELEASE_CHANNEL,
-    )
-    .await
-    .unwrap();
+    db.join_channel(zed_channel, guest, guest_connection, TEST_RELEASE_CHANNEL)
+        .await
+        .unwrap();
 
     assert!(db
         .join_channel_chat(zed_channel, guest_connection, guest)