[Chapel Merge] Allow users to turn off "Show instantiation" code lens

Branch: refs/heads/main
Revision: 5f045c58e910b977cde312a433cce20d1d4a892a
Author: jabraham17
Link: Allow users to turn off "Show instantiation" code lens by jabraham17 · Pull Request #24613 · chapel-lang/chapel · GitHub
Log Message:
Allow users to turn off "Show instantiation" code lens (#24613)

Adds a feature flag to CLS for "Show instantiation", so that users who
don't want/like the code lens can turn it off. The feature is still on
by default.

[Reviewed by @DanilaFe]

Compare: Comparing 1e4cb05a74414e2fbdeb2f33ab64c79a2d94d523...e0f2ce31d96eb223fe246e4a3213c6456d9d0a51 · chapel-lang/chapel · GitHub

Diff:
M tools/chpl-language-server/src/chpl-language-server.py
https://github.com/chapel-lang/chapel/pull/24613.diff