[DO NOT MERGE] Attempt to migrate Java manually

[guineveresaenger]

What it says on the box. Debug PR.

• Migrate Java to generating via the bridge
• remove java gen version

[github-actions]

Does the PR have any schema changes?

Looking good! No breaking changes found.
No new resources/functions.

Maintainer note: consult the runbook for dealing with any breaking changes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 25.12%. Comparing base (c969b18) to head (d68c9f6).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5839   +/-   ##
=======================================
  Coverage   25.12%   25.12%           
=======================================
  Files         363      363           
  Lines      148034   148034           
=======================================
  Hits        37197    37197           
  Misses     110745   110745           
  Partials       92       92           

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