patch 8.1.1453: popup window "moved" property not implemented yet

Problem:    Popup window "moved" property not implemented yet.
Solution:   Implement it.
diff --git a/src/gui.c b/src/gui.c
index 8edc86c..c4df7d9 100644
--- a/src/gui.c
+++ b/src/gui.c
@@ -5117,6 +5117,9 @@
 
     /* Trigger CursorMoved if the cursor moved. */
     if (!finish_op && (has_cursormoved()
+# ifdef FEAT_TEXT_PROP
+		|| popup_visible
+# endif
 # ifdef FEAT_CONCEAL
 		|| curwin->w_p_cole > 0
 # endif
@@ -5124,6 +5127,10 @@
     {
 	if (has_cursormoved())
 	    apply_autocmds(EVENT_CURSORMOVED, NULL, NULL, FALSE, curbuf);
+#ifdef FEAT_TEXT_PROP
+	if (popup_visible)
+	    popup_check_cursor_pos();
+#endif
 # ifdef FEAT_CONCEAL
 	if (curwin->w_p_cole > 0)
 	{