treesitter-context does not refresh hoisted context when diagnostics/decorations change without text changes

Summary

nvim-treesitter-context appears to cache/render hoisted context lines based only on text changes. However, if the underlying line doesn't change but its diagnostic or other decorations do, the hoisted context can become stale and keep this information.

Current behavior

diagnostics can become stale on hoisted context causing confusion

Expected behavior:

• hoisted context should refresh when diagnostics or other relevant decorations for the source line change even if the line remains unchained

Steps to Reproduce

local x = function() <-- shows diagnostic function not used

... <cursor here>
end

• then add x() after end
• go back to where cursor was and notice local x = function is still pinned but it the diagnostic hasn't been removed

The issue names no source file or test. Reproduce the stale diagnostic in a hoisted context, then trace the refresh path for context lines when diagnostics or decorations change without text changes. Done means the hoisted line updates after the diagnostic is removed while its source text remains unchanged.