Fail video duration check before compression

Non-picker entries into the composer (share extension, web paste, draft
restore) skipped the duration check that SelectMediaButton runs, so a
too-long video would compress first and only get rejected afterward.

- Probe duration in selectVideo when missing (share-extension deeplinks
  ship only uri|width|height)
- Reject before processVideo when duration exceeds VIDEO_MAX_DURATION_MS,
  surfacing the error in the composer inline error state
- Apply the same gate to restoreVideo
- Normalize native getVideoMetadata duration to milliseconds to match
  expo-image-picker's convention (was seconds, harmless until now)

eslint-suppressions.json

@@ -1972,9 +1972,6 @@
     "@typescript-eslint/no-explicit-any": {
       "count": 2
     },
-    "@typescript-eslint/no-floating-promises": {
-      "count": 1
-    },
     "@typescript-eslint/no-misused-promises": {
       "count": 4
     },