Hide error when audio recording is started

[grzesiek2010]

Closes #5905

Why is this the best possible solution? Were any other approaches considered?

The error should be removed when recording is started that seems obvious.

How does this change affect users? Describe intentional changes to behavior and behavior that could have accidentally been affected by code changes. In other words, what are the regression risks?

Testing the audio widget as described in the issue should be enough here. We do not need to verify other widgets.

Do we need any specific form for testing your changes? If so, please attach one.

No.

Does this change require updates to documentation? If so, please file an issue here and include the link below.

No.

Before submitting this PR, please make sure you have:

• added or modified tests for any new or changed behavior
• run ./gradlew connectedAndroidTest (or ./gradlew testLab) and confirmed all checks still pass
• added a comment above any new strings describing it for translators
• verified that any code or assets from external sources are properly credited in comments and/or in the about file.
• verified that any new UI elements use theme colors. UI Components Style guidelines

[seadowg]

@getodk/testers could you also have a play with the "Choose sound" route here as well when testing?

[srujner]

Tested with Success!

Verified on device with Android 13

Verified cases:

• Issue Error margin is still visible after turning on the recording #5905 is no longer reproducing;
• Quick check on Audio Widgets;
• Check on "Choose Sound" button;
• Don't keep activities enabled/disabled.
• Background recording

[dbemke]

Tested with Success!

Verified on device with Android 10