fix: restore generation of rswg/rsab chair aliases

[rjsparks]

The recent editorial stream refactoring changed the rswg and rsab group types. A few consequences, including alias generation, were missed.

[codecov]

Codecov Report

Merging #5121 (589e161) into main (bfe25fc) will increase coverage by 0.01%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##             main    #5121      +/-   ##
==========================================
+ Coverage   88.50%   88.51%   +0.01%     
==========================================
  Files         296      295       -1     
  Lines       40018    40016       -2     
==========================================
+ Hits        35416    35421       +5     
+ Misses       4602     4595       -7     

Impacted Files	Coverage Δ
ietf/ietfauth/utils.py	92.85% <50.00%> (ø)
ietf/meeting/views.py	90.70% <100.00%> (+<0.01%)	⬆️
ietf/nomcom/utils.py	91.54% <0.00%> (-0.49%)	⬇️
ietf/secr/sreq/views.py	91.16% <0.00%> (-0.40%)	⬇️
ietf/secr/middleware/dbquery.py
ietf/secr/sreq/forms.py	98.31% <0.00%> (+0.03%)	⬆️
ietf/doc/views_search.py	89.64% <0.00%> (+0.20%)	⬆️

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