Adjust avatar font size globally

[harminius]

Fixes https://github.com/MerginMaps/server-private/issues/3041

Adjust avatar font sizes to align with Figma design

propagates correctly to members page:

[coveralls]

Pull Request Test Coverage Report for Build 16909663246

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 188 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-2.3%) to 91.925%

---

Files with Coverage Reduction	New Missed Lines	%
server/mergin/sync/utils.py	2	85.07%
server/mergin/app.py	4	78.6%
server/mergin/tests/test_middleware.py	5	84.44%
server/mergin/auth/commands.py	10	58.33%
server/mergin/sync/commands.py	56	31.76%
server/mergin/commands.py	111	22.6%

Totals
Change from base Build 16718186679:	-2.3%
Covered Lines:	7126
Relevant Lines:	7752

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💛 - Coveralls

[MarcelGeo]

Do not rewrite these files.

Use _extenstions.scss to tweak .p-avatar class. With something like

.p-avatar:not(.p-avatar-lg):not(.p-avatar-xl) {
  font-size: 0.875rem;
}

We could then double chek if e.g. profile avatar is ok... as it's -lg

Some styles which are really defaults are comming from inline loader from primeuix library.

[MarcelGeo]

If we are upgrading these _miscs.scss , add here comment that we are rewriting it to some other defaults. Double check private version.