[RNMobile] Disable debug logs when running unit tests

[fluiddot]

Related to wordpress-mobile/gutenberg-mobile#5734.

⚠️ This PR depends on #30486.

Proposed changes:

• Prevent enabling debug logs for VideoPress when running unit tests.

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

N/A

Does this pull request change what data or activity we track or use?

N/A

Testing instructions:

Debug logs are disabled in unit tests

• Checkout changes from Add upload test cases for VideoPress block wordpress-mobile/gutenberg-mobile#5735.
• Follow the testing instructions to run the unit tests.
• Observe that VideoPress debug logs are not printed.

Debug logs are enabled in development mode

• Run the app and connect it with the local Metro server (i.e. development mode).
• Add a VideoPress block and add a video.
• Observe that VideoPress debug logs are printed.

[github-actions]

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[github-actions]

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[SiobhyB]

@fluiddot, LGTM! No unexpected side effects in my testing. It looks like this PR just needs updating from trunk for the tests to pass, happy to re-approve if this one gets dismissed as part of that.