feat: optionally hide room-only schedule diffs

[jennifer-richards]

Fixes #8038

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.54%. Comparing base (cbb0e2e) to head (35db889).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9861   +/-   ##
=======================================
  Coverage   88.54%   88.54%           
=======================================
  Files         316      316           
  Lines       42265    42268    +3     
=======================================
+ Hits        37423    37427    +4     
+ Misses       4842     4841    -1     

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