fix: Avoid unwanted whitespace when action_holder_badge is empty

[jennifer-richards]

Cleans up case of unwanted whitespace as mentioned in #3744

[codecov]

Codecov Report

Merging #5266 (15dca0f) into main (0ec1264) will increase coverage by 0.00%.
The diff coverage is 94.36%.

@@           Coverage Diff           @@
##             main    #5266   +/-   ##
=======================================
  Coverage   88.58%   88.58%           
=======================================
  Files         295      294    -1     
  Lines       40114    40071   -43     
=======================================
- Hits        35534    35496   -38     
+ Misses       4580     4575    -5     

Impacted Files	Coverage Δ
ietf/iesg/urls.py	100.00% <ø> (ø)
ietf/meeting/models.py	86.03% <ø> (-0.05%)	⬇️
ietf/meeting/urls.py	81.25% <ø> (ø)
ietf/iesg/views.py	92.53% <85.18%> (-0.71%)	⬇️
ietf/doc/mails.py	96.20% <100.00%> (ø)
ietf/doc/utils_search.py	80.58% <100.00%> (ø)
ietf/group/views.py	90.95% <100.00%> (+0.09%)	⬆️
ietf/ietfauth/views.py	92.12% <100.00%> (+1.09%)	⬆️
ietf/meeting/helpers.py	89.84% <100.00%> (-0.07%)	⬇️
ietf/meeting/views.py	91.12% <100.00%> (-0.01%)	⬇️
... and 6 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.