Avoid crashes in the daemon due to user interaction

* src/minibuf.c (read_minibuf): Avoid crashes in the daemon if the
init file invokes some kind of minibuffer interaction, by not
updating the selected frame if it's the initial frame.
(Bug#44583)

src/minibuf.c

@@ -666,7 +666,8 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
   /* If cursor is on the minibuffer line,
      show the user we have exited by putting it in column 0.  */
   if (XWINDOW (minibuf_window)->cursor.vpos >= 0
-      && !noninteractive)
+      && !noninteractive
+      && !FRAME_INITIAL_P (SELECTED_FRAME ()))
     {
       XWINDOW (minibuf_window)->cursor.hpos = 0;
       XWINDOW (minibuf_window)->cursor.x = 0;