patch 8.1.0682: text properties not adjusted when backspacing replaced text

Problem:    Text properties are not adjusted when backspacing replaced text.
Solution:   Keep text properties on text restored in replace mode.

src/version.c

@@ -799,6 +799,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    682,
 /**/
     681,
 /**/