[flutter_inappwebview_android] Add audio intent

[PrimozRatej]

Connection with issue(s)

Resolve issue #???

Connected to #???

Testing and Review Notes

This PR adds Android audio capture support for file chooser requests with audio/* accept types.

What changed:

• detect audio/* accept types in InAppWebViewChromeClient
• open the audio recorder directly for capture-only audio requests
• include audio recording as a chooser option when audio is accepted
• keep audio capture independent from existing camera permission checks used for image/video capture

Suggested review/testing steps:

1. Run the Android example app.
2. Open a page with <input type="file" accept="audio/*"> and confirm the chooser includes an audio recording option when supported by the device.
3. Open a page with <input type="file" accept="audio/*" capture> and confirm the audio recorder opens directly when available.
4. Open a page with <input type="file" accept="image/*,audio/*"> and confirm both relevant options are available.
5. Confirm existing behavior for image/* and video/* inputs is unchanged.

Notes:

• audio capture intent is guarded with intent resolution checks before launch/use
• image/video capture remains behind the current camera-permission flow
• audio capture is not blocked by missing camera permission

Screenshots or Videos

Not included yet.

Recommended additions before review:

• short screen recording showing accept="audio/*"
• short screen recording showing accept="audio/*" capture

To Do

• double check the original issue to confirm it is fully satisfied
• add testing notes and screenshots in PR description to help guide reviewers
• request the "UX" team perform a design review (if/when applicable)

[arrrrny]

Hey @PrimozRatej! We've applied your audio capture support for file pickers (getAudioIntent(), acceptsAudio(), canResolveIntent()) into the zikzak_inappwebview fork — a community-driven fork with active maintenance. Thanks for the contribution! 🚀

https://github.com/arrrrny/zikzak_inappwebview