Miscellaneous fixes (#22924)

* apply annotation offset to frigate+ submission frame time

* fix broken docs links with hash fragments that resolve wrong on reload

* undo

* use recording snapshot for frigate+ frame submission from VideoControls

rather than a canvas grab/paint, which may not always align with an ffmpeg snapshot due to keyframes

* add more docs links

- display docs link for main sections on collapsible fields

* dialog button consistency

web/public/locales/en/components/player.json

@@ -4,7 +4,8 @@
   "noPreviewFoundFor": "No Preview Found for {{cameraName}}",
   "submitFrigatePlus": {
     "title": "Submit this frame to Frigate+?",
-    "submit": "Submit"
+    "submit": "Submit",
+    "previewError": "Could not load snapshot preview. The recording may not be available at this time."
   },
   "livePlayerRequiredIOSVersion": "iOS 17.1 or greater is required for this live stream type.",
   "streamOffline": {