Fix routing of audio and stats when routeLoudestOnly is disabled

[bgrozev]

• fix: Don't drop audio when routeLoudestOnly is disabled in config.
• fix: Do not drop stats when routeLoudestOnly is disabled.

[codecov]

Codecov Report

Merging #2055 (7843200) into master (f5f3991) will decrease coverage by 0.05%.
Report is 1 commits behind head on master.
The diff coverage is 33.33%.

@@             Coverage Diff              @@
##             master    #2055      +/-   ##
============================================
- Coverage     42.53%   42.49%   -0.05%     
+ Complexity     1681     1678       -3     
============================================
  Files           325      325              
  Lines         17145    17146       +1     
  Branches       2253     2253              
============================================
- Hits           7293     7286       -7     
- Misses         9135     9151      +16     
+ Partials        717      709       -8     

Files	Coverage Δ
...rc/main/java/org/jitsi/videobridge/Conference.java	28.95% <33.33%> (-1.19%)	⬇️

... and 5 files with indirect coverage changes

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