Closes #51620

gopls requires more specific initialization for semantic tokens that other language-servers for reasons that aren't entirely clear to me, it is however a small fix to make it work. still trying to track down other malfunctioning language servers in the semantic token realm, so if you have suggestions let me know.

original behavior (on nightly v0.229):

updated behavior:

Before you mark this PR as ready for review, make sure that you have:

• Added a solid test coverage and/or screenshots from doing manual testing
• Done a self-review taking into account security and performance aspects
• Aligned any UI changes with the UI checklist

Release Notes:

• gopls: fixed semantic token support with gopls.