fix: update extmarks unconditionally

[apollo1321]

Fixes #509
But I am not sure if it is a good solution. Maybe it is better to check if the virtual text has changed? It will be harder to implement and probably will require creating special namespace for extmarks or maintaining list of extmarks for each context window.
@lewis6991, what do you think?

[lewis6991]

I'm not sure this is the best solution. My idea was just to have additional triggers, it won't catch everything, but the main one is just diagnostics which we can special case for now.

Maybe for the general case we can define a user autocmd which can be called?

[apollo1321]

My idea was just to have additional triggers, it won't catch everything, but the main one is just diagnostics which we can special case for now.

Hm, I think we can support special case for Diagnostic. We can add force_update in render.open function. And set this flag in true only for DiagnosticChanged event. Also, it will be necessary to change throttling to support force_update.

Maybe for the general case we can define a user autocmd which can be called?

Are you suggesting providing an API that allows users to manually trigger a context update?

[lewis6991]

Are you suggesting providing an API that allows users to manually trigger a context update?

Potentially. Need to know the use cases first.