patch 8.2.1769: popup filter interferes with using :normal to move the cursor

Problem:    A popup filter interferes with using :normal to move the cursor in
            a popup.
Solution:   Do not invoke the filter when ex_normal_busy is set.
diff --git a/src/getchar.c b/src/getchar.c
index 2c7bd1f..6e469f4 100644
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -1888,7 +1888,9 @@
     }
 #endif
 #ifdef FEAT_PROP_POPUP
-    if (!ex_normal_busy_done && popup_do_filter(c))
+    // Only filter keys that do not come from ":normal".  Keys from feedkeys()
+    // are filtered.
+    if ((!ex_normal_busy || in_feedkeys) && popup_do_filter(c))
     {
 	if (c == Ctrl_C)
 	    got_int = FALSE;  // avoid looping
@@ -3168,9 +3170,6 @@
 			timedout = TRUE;
 			continue;
 		    }
-#ifdef FEAT_PROP_POPUP
-		    ex_normal_busy_done = TRUE;
-#endif
 
 		    // When 'insertmode' is set, ESC just beeps in Insert
 		    // mode.  Use CTRL-L to make edit() return.