patch 8.2.4792: indent operator creates an undo entry for every line

Problem:    Indent operator creates an undo entry for every line.
Solution:   Create one undo entry for all lines. (closes #10227)

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4792,
 /**/
     4791,
 /**/