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/src/components/config-form/section-configs/lpr.ts

@@ -27,10 +27,12 @@ const lpr: SectionConfigOverrides = {
     ],
     fieldDocs: {
       enhancement: "/configuration/license_plate_recognition#enhancement",
+      debug_save_plates:
+        "/configuration/license_plate_recognition/#how-do-i-debug-lpr-issues",
     },
     restartRequired: [],
     fieldOrder: ["enabled", "min_area", "enhancement", "expire_time"],
-    hiddenFields: [],
+    hiddenFields: ["expire_time"],
     advancedFields: ["expire_time", "enhancement"],
     overrideFields: ["enabled", "min_area", "enhancement"],
   },