fix(ui): close outdated cmdline pum on redraw (#36815)

src/nvim/drawscreen.c

@@ -684,6 +684,8 @@ int update_screen(void)
   if (pum_drawn() && must_redraw_pum) {
     win_check_ns_hl(curwin);
     pum_redraw();
+  } else if (State & MODE_CMDLINE) {
+    pum_check_clear();
   }
 
   win_check_ns_hl(NULL);

src/nvim/eval.lua

@@ -2158,6 +2158,7 @@ M.funcs = {
       then the name is also tried without adding an extension.
       On MS-Windows it only checks if the file exists and is not a
       directory, not if it's really executable.
+
       On MS-Windows an executable in the same directory as the Vim
       executable is always found (it's added to $PATH at |startup|).
       			*NoDefaultCurrentDirectoryInExePath*