feat(stream_extensions): Add support for CancellationToken on extension stream.ReadBytesAsync()

[carldebilly]

Feature

Added supprort for CancellationToken on stream.ReadBytesAsync().

PR Checklist

Please check if your PR fulfills the following requirements:

• [X] Tested code with current supported SDKs
• [ ] Docs have been added/updated which fit documentation template. (for bug fixes / features)
• [X] Tests for the changes have been added (for bug fixes / features) (if applicable)
• [X] Contains NO breaking changes
• ~~[ ] Updated the Release Notes~~
• ~~[ ] Associated with an issue (GitHub or internal)~~