fix: comprehensive PR1 cleanup for TS 5.9 + nodenext compat

- Remove leaked PR4 files: JSDoc→TS conversions (.ts files in config-loader,
  parse5-utils, rollup-plugin-copy, rollup-plugin-import-meta-assets,
  storybook-utils) belong in PR4, not PR1
- Override JSDoc package tsconfigs to use module:commonjs/moduleResolution:node
  since their .js source files are incompatible with nodenext
- Fix parse5 Token→Attribute type import for parse5 v6 compat
- Fix Object.values(bundle) unknown type with explicit cast
- Add CJS interop for saucelabs and internal-ip (build errors with nodenext)
- Add CJS interop for rollup plugins in storybook-builder
- Restore master test scripts (test migration belongs in PR2)
- Remove tsx devDep from test-runner-core (belongs in PR2)
- Add workaround for @jridgewell/remapping .d.cts TS 5.9 syntax error
- Restore rollup-plugin-html source files from master with .ts imports

Assisted-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bennypowers