bug#81637: Regression: Tree-sitter font-lock drops highlighting in indirect buffers

There is a regression in tree-sitter where syntax
highlighting is completely lost when creating an indirect
buffer (via clone-indirect-buffer or C-x 4 c) from a base
buffer running a tree-sitter major mode.

This worked correctly in Emacs 29 but broke in the recent
Emacs 31 and 32 changes.

To reproduce:

- Open a source file that uses a tree-sitter major mode.
- Create an indirect buffer using
   M-x clone-indirect-buffer (or 'C-x 4 c').
- Observe that the syntax highlighting is entirely or
   partially missing in the new indirect buffer.

--
James Cherti
GitHub: https://github.com/jamescherti
Website: https://www.jamescherti.com/