Request RoomStateRevisionIssuers in order for protected rooms.

We believe this is the cause of a performance regression in Draupnir:
the-draupnir-project/Draupnir#380.
Unfortunately we don't have the infrastructure in our unit testing
or deployment to be able to truthfully understand the cause.

So we have created a follow up the-draupnir-project/Draupnir#389.
Our approach for now is just to guess some of the most glaring
changes that have caused the regression.

If this fails to make a significant difference, other culprits
are changes to the parsing code (ie, there was a recent version
of MPS where we moved away from accidentally using the empty
schema for most event content), including the recent upgrade
to typebox 0.32.22.

src/Protection/ProtectedRoomsManager/StandardProtectedRoomsManager.ts

@@ -99,11 +99,11 @@ export class StandardProtectedRoomsManager
         SetMembershipMirror.addRoom(blankSetMembership, room, membershipIssuer);
       }
     );
-    const allProtectedRooms = protectedRoomsConfig.getProtectedRooms();
-    const results = await Promise.all(allProtectedRooms.map(joinAndAdd));
-    const error = results.find(isError);
-    if (error !== undefined) {
-      return error;
+    for (const room of protectedRoomsConfig.getProtectedRooms()) {
+      const result = await joinAndAdd(room);
+      if (isError(result)) {
+        return result;
+      }
     }
     return Ok(
       new StandardProtectedRoomsManager(