Fix Pull Request merge buttons on mobile

[kolaente]

This PR fixes the Pull Request merge buttons on mobile devices. Especially for languages with longer button texts, this can look quite broken.

Before:

After:

[codecov-commenter]

Codecov Report

Merging #13035 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #13035      +/-   ##
==========================================
- Coverage   42.62%   42.60%   -0.03%     
==========================================
  Files         672      672              
  Lines       73785    73785              
==========================================
- Hits        31448    31433      -15     
- Misses      37247    37256       +9     
- Partials     5090     5096       +6     

Impacted Files	Coverage Δ
modules/indexer/stats/db.go	43.47% <0.00%> (-26.09%)	⬇️
modules/indexer/stats/queue.go	64.70% <0.00%> (-11.77%)	⬇️
modules/git/utils.go	73.77% <0.00%> (-3.28%)	⬇️
models/error.go	34.34% <0.00%> (-0.51%)	⬇️
modules/git/repo.go	46.19% <0.00%> (-0.51%)	⬇️
services/pull/pull.go	40.78% <0.00%> (-0.50%)	⬇️
services/pull/check.go	48.46% <0.00%> (+0.76%)	⬆️

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[techknowlogick]

🚀

[kolaente]

Awesome, thanks for merging!