Send uk.half-shot.bridge in addition to m.bridge

mautrix_telegram/portal/metadata.py

@@ -307,13 +307,7 @@ class PortalMetadata(BasePortal, ABC):
             for invite in invites:
                 power_levels.users.setdefault(invite, 100)
             self.title = puppet.displayname
-        initial_state = [{
+        bridge_info = {
-            "type": EventType.ROOM_POWER_LEVELS.serialize(),
-            "content": power_levels.serialize(),
-        }, {
-            "type": "m.bridge",
-            "state_key": f"net.maunium.telegram://telegram/{self.tgid}",
-            "content": {
             "bridgebot": self.az.bot_mxid,
             "creator": self.main_intent.mxid,
             "protocol": {
@@ -325,6 +319,18 @@ class PortalMetadata(BasePortal, ABC):
                 "id": self.tgid
             }
         }
+        initial_state = [{
+            "type": EventType.ROOM_POWER_LEVELS.serialize(),
+            "content": power_levels.serialize(),
+        }, {
+            "type": "m.bridge",
+            "state_key": f"net.maunium.telegram://telegram/{self.tgid}",
+            "content": bridge_info
+        }, {
+            # TODO remove this once https://github.com/matrix-org/matrix-doc/pull/2346 is in spec
+            "type": "uk.half-shot.bridge",
+            "state_key": f"net.maunium.telegram://telegram/{self.tgid}",
+            "content": bridge_info
         }]
         if config["bridge.encryption.default"] and self.matrix.e2ee:
             self.encrypted = True