chore(ci): move platform steps to release

[jsjoeio]

Testing Plan

1. Download npm-package from CI
2. Unzip
3. cp -r node_modules over
4. run e2e tests: CODE_SERVER_TEST_ENTRY=./release yarn test:e2e

Run Draft Release workflow manually and double-check it still works: https://github.com/coder/code-server/actions/runs/3137843307

https://github.com/coder/code-server/releases/tag/untagged-75fb9412785a52dd69a5

Fixes #

[jsjoeio]

point it to ./release instead for when you switch to npm. copy over the node_modules for lib and node_modules.

run: KEEP_MODULES=1 yarn release

we'll have to test this and run draft workflow and see if the native tests still work okay. if they do, we're good. otherwise, we'll have to make a separate artifact or something.

[github-actions]

✨ code-server dev build published to npm for PR #5587!

• Last publish status: success
• Commit: 4ef8e6e

To install in a local project, run:

npm install @coder/code-server-pr@5587

To install globally, run:

npm install -g @coder/code-server-pr@5587

[codecov]

Codecov Report

Merging #5587 (4ef8e6e) into main (3264187) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5587   +/-   ##
=======================================
  Coverage   72.44%   72.44%           
=======================================
  Files          30       30           
  Lines        1673     1673           
  Branches      366      366           
=======================================
  Hits         1212     1212           
  Misses        398      398           
  Partials       63       63           

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