[ProjectSettings, SiteSettings] Migrate from deprecated Grid

[imnasnainaec]

Part of #3787

Notes for review:

• In most places, replaced <Grid> with <Grid2>, <Stack>, <Box>, <div>, or nothing, as fit the design need.
• <Stack direction="row"> can be used in place of <Grid2> when we don't want the items in the row to wrap to a second row in a narrow window
• Do a side-by-side visual comparison between this and master (on QA) to make sure appearance is (roughly) the same or (subjectively) improved on all edited components
• Try each edited component with various window widths > 400px (we don't support narrower than that)
• To test UploadImage and ViewImageDialog (respectively):
  • go to project settings > "Users" tab > "Manage speakers", add a speaker, click the + preceding the speaker name, select "Upload image consent"
  • click the "Browse" button and select any image file from your computer, click the "Save" button, click the image icon preceding the speaker name (where the + used to be)
• Test SiteSettings by logging in with a site admin (https://github.com/sillsdev/TheCombine?tab=readme-ov-file#grant-admin-rights), then click your avatar to open the UserMenu and the top option will be "Site Settings"
• Test with a few different UI languages

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Screenshot pairs below are before and after

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Project Settings > Languages > Analysis > text wrapping

300px

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Project Settings > Semantic Domains > Custom Semantic Domains > look at spacing around icons

900px

350px

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Site Settings > Users > delete user dialog

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Site Settings > Banners

800px

400px

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This change is 

[codecov]

Codecov Report

❌ Patch coverage is 53.06122% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.13%. Comparing base (1fe94f6) to head (ba2c907).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...rc/components/ProjectSettings/ProjectLanguages.tsx	65.38%	8 Missing and 1 partial ⚠️
...s/ProjectSettings/ProjectSchedule/DateSelector.tsx	0.00%	4 Missing ⚠️
...ts/SiteSettings/UserManagement/ConfirmDeletion.tsx	0.00%	4 Missing ⚠️
src/components/ProjectSettings/ProjectName.tsx	50.00%	2 Missing ⚠️
...nents/ProjectSettings/ProjectProtectedOverride.tsx	0.00%	2 Missing ⚠️
src/components/Dialogs/UploadImage.tsx	0.00%	1 Missing ⚠️
...ojectSettings/ProjectSchedule/DateScheduleEdit.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3863   +/-   ##
=======================================
  Coverage   74.13%   74.13%           
=======================================
  Files         288      288           
  Lines       10606    10614    +8     
  Branches     1323     1326    +3     
=======================================
+ Hits         7863     7869    +6     
- Misses       2358     2359    +1     
- Partials      385      386    +1     

Flag	Coverage Δ
backend	85.41% <ø> (ø)
frontend	65.58% <53.06%> (+0.01%)	⬆️

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[jasonleenaylor]

Reviewed 10 of 23 files at r1, 5 of 11 files at r2, 7 of 8 files at r3, 2 of 2 files at r4, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @imnasnainaec)