small-user-avatars - Adjust spacing

[Katsute]

Fixes #7002

Adds left margin to user avatars to better match word spacing

Test URLs

Hello world. @Katsute Hello world. Omniscience

@Katsute Ordinary

Screenshot

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[NoahAndrews]

While I much prefer this to the status quo, now there's a little too much margin to my eyes (please forgive the pickiness). In particular, I think the fact that it's still not aligned when a paragraph starts with a mention doesn't look good.

[Katsute]

[fregante]

Thanks for looking into this! The issue is due to the image's border not using border but box-shadow, so it doesn't expand the img's box. The border here is 1px so we should match that, it seems that when comparing it to the letter O it aligns decently, while 2px seems too much (especially on a new line)

2px

1px

[fregante]

Nested CSS like it's 2023😎