Revert "break: changed the results window highlight to always be full width (#1312)" (#1398)

This reverts commit 3b9ac8edba.

lua/telescope/pickers/highlights.lua

@@ -1,6 +1,5 @@
 local a = vim.api
 local log = require "telescope.log"
-local conf = require("telescope.config").values
 
 local highlights = {}
 
@@ -70,13 +69,7 @@ function Highlighter:hi_selection(row, caret)
   a.nvim_buf_clear_namespace(results_bufnr, ns_telescope_selection, 0, -1)
   a.nvim_buf_add_highlight(results_bufnr, ns_telescope_selection, "TelescopeSelectionCaret", row, 0, #caret)
 
-  a.nvim_buf_set_extmark(
-    results_bufnr,
-    ns_telescope_selection,
-    row,
-    #caret,
-    { end_line = row + 1, hl_eol = conf.hl_result_eol, hl_group = "TelescopeSelection" }
-  )
+  a.nvim_buf_add_highlight(results_bufnr, ns_telescope_selection, "TelescopeSelection", row, #caret, -1)
 end
 
 function Highlighter:hi_multiselect(row, is_selected)