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/main.c b/src/main.c
index e1ddbf7..e9165c6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1159,6 +1159,9 @@
 	    /* 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
@@ -1168,14 +1171,18 @@
 		if (has_cursormoved())
 		    apply_autocmds(EVENT_CURSORMOVED, NULL, NULL,
 							       FALSE, curbuf);
-# ifdef FEAT_CONCEAL
+#ifdef FEAT_TEXT_PROP
+		if (popup_visible)
+		    popup_check_cursor_pos();
+#endif
+#ifdef FEAT_CONCEAL
 		if (curwin->w_p_cole > 0)
 		{
 		    conceal_old_cursor_line = last_cursormoved.lnum;
 		    conceal_new_cursor_line = curwin->w_cursor.lnum;
 		    conceal_update_lines = TRUE;
 		}
-# endif
+#endif
 		last_cursormoved = curwin->w_cursor;
 	    }