Add language independent field icon.

[iRohitSingh]

Fix #6297

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[davisagli]

@iRohitSingh Please take note of the checks which failed on this PR. It looks like you need to:

1. Add the changelog
2. Update test snapshots
3. Update i18n

[stevepiercy]

Language and news look good. There are some failing tests to investigate.

[iRohitSingh]

Language and news look good. There are some failing tests to investigate.

Ok. I am investigating it.

[davisagli]

This looks ready to me. @plone/volto-team Can we merge this for Volto 18?

[JeffersonBledsoe]

Left an accessibility improvement comment regarding associating the message with the field that we should make, but we can likely fix that as non-breaking later on. LGTM
Edit: Had some weird GitHub issues, review is below now

[ichim-david]

@iRohitSingh @davisagli this is not so easy to test given the multilingual setup need, can we get some screenshots of this feature in action?

[davisagli]

@ichim-david Sure, here are a couple screenshots from our project:

With sidebar expanded:

(That makes me realize that we should use a popup component instead of a title attribute, so that it can be accessed on a touch device.)

Things get a bit cramped when the sidebar is not expanded:

[pnicolli]

LGTM