Fix compressor issues and address review feedback

[XChikuX]

Addresses the remaining real issues tracked in TRIAGE.md across upload, thumbnailing, image quality, and Android video container handling.

• iOS background upload

  • Accumulates URLSession response data.
  • Returns body as a UTF-8 string, matching Android behavior.
  • Cleans resolver/rejector/storage state on success and failure.

• Thumbnail generation

  • Adds Android/iOS JPEG quality clamping.
  • Retries frame extraction with more tolerant timestamps/options.
  • Returns deterministic errors when no thumbnail frame can be decoded.

• Image quality

  • Clamps JPEG quality to valid platform ranges before encoding.
  • Applies the same clamped quality path when PNG transparency is disabled.

• Android video output

  • Writes compressed MP4s as fast-start/streamable files for broader browser compatibility.
  • Skips unsupported copied audio metadata that can crash mp4parser or produce invalid containers.

await createVideoThumbnail(videoUri, {
  quality: 0.8,
  headers: { Authorization: token },
});

Please treat as reference implementation. I've reviewed the changes though and they seem minimally invasive.
Should give fixes to long standing issues in this repo.

[numandev1]

release it in v1.18.2

[XChikuX]

@numandev1 Hope you checked features and compile issues before merging..

[numandev1]

@XChikuX I did not check it manually
i checked it via github action https://github.com/numandev1/react-native-compressor/actions/runs/25541583900/job/74968467395

[XChikuX]

@numandev1
That only assures that builds are working. Individual features may still be sub-optimal or even cause crashes.

If you really want to be hands off with the updates. You need to add several tests.
Please use jest and/or maestro and add these tests to the CI after your build step.

Otherwise, please verify these once manually. I am short on time to perform comprehensive testing from my end.