fix: standard group card height

[maze-runnar]

Fixes #7985
Fixes #8005
Fixes #8004

Short description of what this resolves:

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[vercel]

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🔍 Inspect: https://vercel.com/eventyay/open-event-frontend/A8MyLtQThxJAppFjZJqFejgj5FKn
✅ Preview: https://open-event-frontend-git-fork-maze-runnar-group-card-eventyay.vercel.app

[codecov]

Codecov Report

Merging #8002 (4b8f136) into development (d6b67b5) will decrease coverage by 0.08%.
The diff coverage is 0.00%.

@@               Coverage Diff               @@
##           development    #8002      +/-   ##
===============================================
- Coverage        18.65%   18.56%   -0.09%     
===============================================
  Files              619      619              
  Lines             7369     7410      +41     
  Branches           149      149              
===============================================
+ Hits              1375     1376       +1     
- Misses            5966     6006      +40     
  Partials            28       28              

Impacted Files	Coverage Δ
app/components/promoted-group-card.js	0.00% <0.00%> (ø)
app/controllers/public/index.js	5.08% <0.00%> (-1.33%)	⬇️
...mponents/forms/events/view/create-discount-code.js	0.00% <0.00%> (ø)

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[pavnesh-c]

We may want to slice the group.about to lesser characters. Its 100 now.

[mariobehling]

Thumbnail image are not displayed. Events have their thumbnails, but groups do not show them.

[maze-runnar]

[maze-runnar]

[mariobehling]

Thumbnails are using original images, e.g. https://open-event-frontend-git-fork-maze-runnar-group-card-eventyay.vercel.app/explore/groups?name=fossasia . Check the thumbnail. It is 6MB big. Not really a small thumbnail.

[maze-runnar]

I think celery is not working correctly on server side. Let me look.

[maze-runnar]

@mariobehling I checked it locally, it's resizing correctly, maybe there is a problem with celery on production.

[mariobehling]

Ok, will test it after deploying again on live server. Thanks.