Validate required fields in writeback forms

[kulyk]

Based on BE work from #23213

Makes FE take the new database_required field metadata flag in mind when building insert/update forms. Required fields are going to have a "(required)" label next to their display names and the form submission will be disabled until all the required fields are filled in.

[codecov]

Codecov Report

Merging #23387 (05e61d7) into pod-writeback (c9f59ec) will decrease coverage by 0.07%.
The diff coverage is 6.66%.

@@                Coverage Diff                @@
##           pod-writeback   #23387      +/-   ##
=================================================
- Coverage          64.01%   63.94%   -0.08%     
=================================================
  Files               2657     2652       -5     
  Lines              83725    83269     -456     
  Branches           10409    10402       -7     
=================================================
- Hits               53600    53248     -352     
+ Misses             25890    25805      -85     
+ Partials            4235     4216      -19     

Flag	Coverage Δ
front-end	44.53% <6.66%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
frontend/src/metabase-lib/lib/metadata/Field.ts	70.83% <ø> (ø)
...rc/metabase/writeback/containers/WritebackForm.tsx	0.00% <0.00%> (ø)
frontend/src/metabase/writeback/utils.ts	40.00% <14.28%> (-2.86%)	⬇️
src/metabase/task/sync_databases.clj	77.08% <0.00%> (-3.48%)	⬇️
src/metabase/driver/sql_jdbc/execute.clj	75.11% <0.00%> (-2.01%)	⬇️
...issions/query_processor/middleware/permissions.clj	88.13% <0.00%> (-1.70%)	⬇️
...c/metabase/driver/sql_jdbc/sync/describe_table.clj	61.16% <0.00%> (-1.51%)	⬇️
src/metabase/models/card.clj	89.50% <0.00%> (-1.36%)	⬇️
src/metabase/api/card.clj	77.91% <0.00%> (-0.76%)	⬇️
...ase/modes/components/drill/DashboardClickDrill.jsx	2.22% <0.00%> (-0.60%)	⬇️
... and 44 more

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