fix(ui): alert registry should properly upload media

[sogehige]

Fixes https://discord.com/channels/317348946144002050/317349069024395264/788481679043592192

CHECKLIST

• I read contributing docs

[codecov]

Codecov Report

Merging #4440 (b6632a1) into master (5180589) will decrease coverage by 0.25%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #4440      +/-   ##
==========================================
- Coverage   55.70%   55.45%   -0.26%     
==========================================
  Files         135      135              
  Lines       14346    14347       +1     
  Branches     2897     2897              
==========================================
- Hits         7992     7956      -36     
- Misses       6354     6391      +37     

Flag	Coverage Δ
mysql	?
postgres	55.42% <0.00%> (-0.11%)	⬇️
sqlite	55.28% <0.00%> (+0.10%)	⬆️

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Impacted Files	Coverage Δ
src/bot/registries/alerts.ts	35.45% <0.00%> (-0.33%)	⬇️
src/bot/helpers/sql.ts	41.17% <0.00%> (-58.83%)	⬇️
src/bot/systems/points.ts	61.56% <0.00%> (-8.44%)	⬇️
src/bot/main.ts	71.81% <0.00%> (-1.82%)	⬇️
src/bot/systems/moderation.ts	94.50% <0.00%> (+1.03%)	⬆️

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