patch 8.2.4210: window title test fails in some configurations

Problem:    Window title test fails in some configurations.
Solution:   Only run the test if the title can be obtained.
diff --git a/src/version.c b/src/version.c
index 4c263ae..5be0473 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4210,
+/**/
     4209,
 /**/
     4208,