Fix Toggle All button state, stop icons, and Disable tooltip

- Fix Toggle All button always showing Start: /picture-targets list
  endpoint does not include processing state; now fetches
  /picture-targets/{id}/state per-target in parallel in both
  loadProfiles() and toggleProfileTargets()
- Replace pause icons (⏸) with stop icons (⏹) in dashboard
- Change profile automation toggle tooltip from 'Disabled' (status)
  to 'Disable' (action); add profiles.action.disable i18n key

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/locales/en.json

@@ -516,6 +516,7 @@
   "profiles.status.active": "Active",
   "profiles.status.inactive": "Inactive",
   "profiles.status.disabled": "Disabled",
+  "profiles.action.disable": "Disable",
   "profiles.last_activated": "Last activated",
   "profiles.logic.and": " AND ",
   "profiles.logic.or": " OR ",
@@ -525,6 +526,8 @@
   "profiles.created": "Profile created",
   "profiles.deleted": "Profile deleted",
   "profiles.error.name_required": "Name is required",
+  "profiles.toggle_all.start": "Start all targets",
+  "profiles.toggle_all.stop": "Stop all targets",
   "time.hours_minutes": "{h}h {m}m",
   "time.minutes_seconds": "{m}m {s}s",
   "time.seconds": "{s}s",