fix: React plugin live query improvements, and export types

[github-actions[bot]]

Built bundles:

• Postgres WASM: https://github.com/electric-sql/pglite/actions/runs/11241781666/artifacts/2031106881
• Interim build files: https://github.com/electric-sql/pglite/actions/runs/11241781666/artifacts/2031106980
• PGlite: https://github.com/electric-sql/pglite/actions/runs/11241781666/artifacts/2031134841
• Demos: https://github.com/electric-sql/pglite/actions/runs/11241781666/artifacts/2031147960

[samwillis]

@msfstef this works, I'm using it in the new Linearline PR, but its failing test. Any idea why? I'm can't work it out...

[github-actions[bot]]

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