Closes #41457 #41806 #41801

Copilot started using `node:sqlite` module which is an experimental
feature between node v22-v23 (stable in v24). The fix was passing in the
experimental flag when Zed starts the copilot LSP.

I tested this with v20.19.5 and v24.11.0. The fix got v20.19 working and
didn't affect v24.11 which was already working.

Release Notes:

- AI: Fix Github Copilot edit predictions failing to start