Fix save_to_disk example to work with recent SDK

[typester]

This pull request fixes the issue described in #465.

The issue occurred because the example code was not updated to reflect recent changes in the SDK. To address this, I updated only the example code, leaving the SDK code unchanged. This ensures that the example works correctly with the latest SDK.

I have verified that the fix works as expected on my local environment.

Connected to room: test - RM_XbLs8ZcGkyXR
Recording track TrackSid("TR_AMPtcW3Rt7zTNZ")
Done

[ilo-nanpa]

it seems like you haven't added any nanpa changeset files to this PR.

if this pull request includes changes to code, make sure to add a changeset, by writing a file to .nanpa/<unique-name>.kdl:

minor type="added" "Introduce frobnication algorithm"

refer to the manpage for more information.

[CLAassistant]

All committers have signed the CLA.

[bcherry]

lgtm!

[bcherry]

@typester did you confirm whether any other examples are similarly broken? The original issue says that "most" were broken.

[typester]

@typester did you confirm whether any other examples are similarly broken? The original issue says that "most" were broken.

Yes, I've confirmed some other examples have same issues. I will fix these as well as separated pull requests.

[typester]

@bcherry

I tested each example listed in this repository's README:

• basic_room - Works without changes
• wgpu_room - Requires minor fixes (Fix wgpu_room to work with recent SDK #530)
• mobile - Not tested yet
• play_from_disk - Needs compilation and WAV parser fixes (Fix play_from_disk example to work with recent SDK #529)
• save_to_disk - This pull request

I plan to check the mobile example tomorrow. Testing the examples was helpful for me as it allowed me to see how this SDK is used in practice.