fix: wrong if condition where rooms get removed from list even when includeLeave == true

[krille-chan]

No description provided.

[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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[codecov]

Codecov Report

❌ Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.38%. Comparing base (f63953b) to head (ef07a2b).

Files with missing lines	Patch %	Lines
lib/src/client.dart	40.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2475      +/-   ##
==========================================
- Coverage   60.39%   60.38%   -0.01%     
==========================================
  Files         162      162              
  Lines       20561    20564       +3     
==========================================
+ Hits        12417    12418       +1     
- Misses       8144     8146       +2     

Files with missing lines	Coverage Δ
lib/src/client.dart	78.24% <40.00%> (-0.09%)	⬇️

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