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/onvif.ts

@@ -3,6 +3,11 @@ import type { SectionConfigOverrides } from "./types";
 const onvif: SectionConfigOverrides = {
   base: {
     sectionDocs: "/configuration/cameras#setting-up-camera-ptz-controls",
+    fieldDocs: {
+      autotracking: "/configuration/autotracking",
+      "autotracking.calibrate_on_startup":
+        "/configuration/autotracking#calibration",
+    },
     fieldOrder: [
       "host",
       "port",