patch 8.1.0654: when deleting a line text property flags are not adjusted

Problem:    When deleting a line text property flags are not adjusted.
Solution:   Adjust text property flags in preceding and following lines.
diff --git a/src/version.c b/src/version.c
index 0c76e12..ec65db4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    654,
+/**/
     653,
 /**/
     652,