Tweaks (#23367)

* add ptz presets and default role widgets

* language tweaks

* fix width in triggers view

* tweak iOS PWA message in notifications settings

* deprecate ui.date_style and ui.time_style

these have been unused since date/time formatting has been pushed to i18n

* add config migrator to remove date_style and time_style

* remove date_style and time_style from reference config

* fix camera list scrolling in state classification wizard on mobile

web/public/locales/en/config/global.json

@@ -212,7 +212,7 @@
     },
     "default_role": {
       "label": "Default role",
-      "description": "Default role assigned to proxy-authenticated users when no role mapping applies (admin or viewer)."
+      "description": "Default role assigned to proxy-authenticated users when no role mapping applies."
     },
     "separator": {
       "label": "Separator character",
@@ -270,14 +270,6 @@
       "label": "Time format",
       "description": "Time format to use in the UI (browser, 12hour, or 24hour)."
     },
-    "date_style": {
-      "label": "Date style",
-      "description": "Date style to use in the UI (full, long, medium, short)."
-    },
-    "time_style": {
-      "label": "Time style",
-      "description": "Time style to use in the UI (full, long, medium, short)."
-    },
     "unit_system": {
       "label": "Unit system",
       "description": "Unit system for display (metric or imperial) used in the UI and MQTT."