patch 8.2.0706: Vim9: using assert_fails() causes function to finish

Problem:    Vim9: using assert_fails() causes function to finish.
Solution:   Check did_emsg instead of called_emsg.
diff --git a/src/version.c b/src/version.c
index 45f67c9..ea8b2a5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    706,
+/**/
     705,
 /**/
     704,