patch 8.2.4922: mouse test fails on MS-Windows

Problem:    Mouse test fails on MS-Windows.
Solution:   Set 'mousemodel' to "extend".
diff --git a/src/version.c b/src/version.c
index 3183e96..9f72d7d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4922,
+/**/
     4921,
 /**/
     4920,