mesh-watcher: read who holds the controller and the bus from the placement seat's state, not the controller's seats (issue 1955, ADR 0571 clause 4)

modules/mesh-watcher/module.json

@@ -7,11 +7,11 @@
     "mesh-self-check.checked"
   ],
   "reads": [
-    "mesh-conditions.takeover"
+    "mesh-conditions.takeover",
+    "mesh-delivery-assigner.seat-holders"
   ],
   "invokes": [
-    "mesh-watcher.watcher_ping",
-    "seat:mesh-controller.seats"
+    "mesh-watcher.watcher_ping"
   ],
   "own-secrets": {
     "telegram-token": "${dir:state}/telegram-token"
@@ -43,7 +43,9 @@
       "type": "file",
       "path": "${dir:state}/settings.json",
       "mode": "0600",
-      "takes-config": ["telegram-chat-id"],
+      "takes-config": [
+        "telegram-chat-id"
+      ],
       "merge": "json",
       "template": "files/settings.json"
     }