patch 8.2.0349: Vim9: constant expression not well tested

Problem:    Vim9: constant expression not well tested.
Solution:   Add tests for "if" with constant expression.
diff --git a/src/version.c b/src/version.c
index d595d17..9c5fca8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    349,
+/**/
     348,
 /**/
     347,