fix: stream.extra not none in BBB video recordings

[codedsun]

Fixes #8378

Short description of what this resolves:

Changes proposed in this pull request:

Checklist

• I have read the Contribution & Best practices Guide and my PR follows them.
• My branch is up-to-date with the Upstream development branch.
• The unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

• All the functions created/modified in this PR contain relevant docstrings.

[codecov]

Codecov Report

Merging #8379 (a10b12f) into development (1d25fb2) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

❗ Current head a10b12f differs from pull request most recent head b119c84. Consider uploading reports for the commit b119c84 to get more accurate results

@@               Coverage Diff               @@
##           development    #8379      +/-   ##
===============================================
- Coverage        65.62%   65.61%   -0.01%     
===============================================
  Files              306      306              
  Lines            15929    15931       +2     
===============================================
  Hits             10453    10453              
- Misses            5476     5478       +2     

Impacted Files	Coverage Δ
app/api/video_recordings.py	45.71% <0.00%> (-1.35%)	⬇️

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[codedsun]

@pc-beast @progmatic-99 Now review please. This function should only work when the provider is bbb.

[codedsun]

@pc-beast @progmatic-99 Please test!