Migration v42: HideFrom tooltip consistency migration (#110517)

* Migration to be verified: v42 HideFrom tooltip migration

* snap update

* make gen cue

* Add comments of 42 being the final version

apps/dashboard/pkg/migration/testdata/output/v40.refresh_false.json

@@ -1,7 +1,7 @@
 {
   "panels": [],
   "refresh": "",
-  "schemaVersion": 41,
+  "schemaVersion": 42,
   "time": {
     "from": "now-6h",
     "to": "now"