fix auto-sized logo sizes

[LitoMore]

Fixes #10549

[github-actions]

	Warnings
⚠️	This PR modified helper functions in lib/ but not accompanying tests. That's okay so long as it's refactoring existing code.

	Messages
📖	✨ Thanks for your contribution to Shields, @LitoMore!

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[jNullj]

code wise it looks good, i run it and i see it works great:
http://localhost/badge/test-me-green?logo=amd&logoSize=auto

http://localhost/badge/test-me-green?logo=fineco&logoSize=auto

But design wise do we want to break consistency for badges width?
I understand we already got a conclusion for this at #8372 & #9191 that as long as its opt in thats alright.

I would like to hear what other maintainers think about this.

[LitoMore]

Each logo has its different aspect ratio, so we can't make all icons consistent.

If you mean the width, then we need to consider adding logoWidth back so that users can adjust the width themselves.

[github-actions]

🚀 Updated review app: https://pr-10764-badges-shields.fly.dev

[chris48s]

This seems like a pretty straightforward fix to the existing functionality. The auto size as it stands gives an inconsistent width by design.