patch 8.2.2755: Vim9: no error for using a number in a condition

Problem:    Vim9: no error for using a number in a condition.
Solution:   Also use ISN_COND2BOOL if the type is t_number_bool.
            (closes #7644)
diff --git a/src/version.c b/src/version.c
index d18c0f8..d8b39eb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2755,
+/**/
     2754,
 /**/
     2753,