feat: ensure the new logic is used for the cursorline visibility check (#166)

in a previous commit, the logic was changed from simply checking the cursorline option to also considering the related cursorlineopt option to verify that the full cursorline is drawn. there is unfortunately one more spot in the code i've missed

Author: spflaumer

lua/tiny-inline-diagnostic/highlights.lua

@@ -144,7 +144,7 @@ end
 function M.get_diagnostic_highlights(blend_factor, diag_ret, curline, index_diag)
   local diag_hi, diag_inv_hi, body_hi = M.get_diagnostic_highlights_from_severity(diag_ret.severity)
 
-  local is_cursorline_enabled = vim.opt.cursorline:get()
+  local cursorline_is_visible = is_cursorline_visible()
 
   if
     (diag_ret.line and diag_ret.line == curline)
@@ -161,7 +161,7 @@ function M.get_diagnostic_highlights(blend_factor, diag_ret, curline, index_diag
     (diag_ret.line and diag_ret.line ~= curline)
     or index_diag > 1
     or diag_ret.need_to_be_under
-    or not is_cursorline_enabled
+    or not cursorline_is_visible
   then
     diag_inv_hi = diag_inv_hi .. "NoBg"
   end