fix: Sort rooms by ascending capacity in schedule editor

[jennifer-richards]

Orders rooms on the schedule editor by ascending, not descending, capacity. This was switched to descending in #4653 but @flynnliz requested the original order.

(This is not a revert of #4653, though. That PR also made capacity the highest priority factor in room ordering, which is kept here.)

[codecov]

Codecov Report

Merging #5178 (90700da) into main (f9c2376) will decrease coverage by 0.01%.
The diff coverage is 90.27%.

@@            Coverage Diff             @@
##             main    #5178      +/-   ##
==========================================
- Coverage   88.54%   88.53%   -0.01%     
==========================================
  Files         295      295              
  Lines       40046    40050       +4     
==========================================
+ Hits        35458    35460       +2     
- Misses       4588     4590       +2     

Impacted Files	Coverage Δ
ietf/doc/urls.py	100.00% <ø> (ø)
ietf/doc/views_doc.py	91.53% <ø> (+0.15%)	⬆️
ietf/meeting/views.py	90.85% <ø> (ø)
ietf/api/views.py	89.44% <89.55%> (-0.03%)	⬇️
ietf/api/urls.py	100.00% <100.00%> (ø)
ietf/sync/discrepancies.py	100.00% <100.00%> (ø)
ietf/utils/text.py	85.97% <0.00%> (-1.22%)	⬇️

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