chore: update js-lingui-solid submodule pointer for Windows compatibility

[Cynrode]

What

Updates the js-lingui-solid submodule pointer to the latest commit that includes Windows-compatible behavior.

• Removes the WSL requirement for building the submodule.
• Ensures pnpm install works correctly on Windows.
• Updates the submodule pointer in stoat-for-web without modifying other repositories.

Why

Building or installing on Windows required WSL, which caused setup friction for contributors on native Windows environments. This changes ensures a smoother setup and cross-platform consistency while keeping the PR minimal and reviewable.

Testing

• Verified that pnpm install succeeds on Windows without errors.
• Submodule changes are limited tot the pointer update; no other files in stoat-for-web were modified.

[Cynrode]

CI Failure Explanation

The current CI failures are caused by the submodule commit not being reachable from the canonical repo yet, not by any issue with the changes themselves.

fatal: remote error: upload-pack: not our ref 0118ffccfe2b49f8d6d6c6cff437c4529ad4d613
fatal: Fetched in submodule path 'packages/js-lingui-solid', but it did not contain 0118ffccfe2b49f8d6d6c6cff437c4529ad4d613.

The submodule pointer references a commit that currently only exists in my fork. The fix lives in a separate PR against stoatchat/javascript-lingui-solid:

➡️ stoatchat/javascript-lingui-solid#1 — adds prepare scripts to both babel-plugin-extract-messages and babel-plugin-lingui-macro so that dist/ builds automatically on pnpm install, removing the Windows/WSL requirement.

Once that PR is merged, I can update the submodule pointer here in the canonical commit and CI should pass.