patch 8.2.1478: Vim9: cannot use "true" for some popup options

Problem:    Vim9: cannot use "true" for some popup options.
Solution:   Add dict_get_bool(). (closes #6725)
diff --git a/src/version.c b/src/version.c
index e332c01..b17bcd2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1478,
+/**/
     1477,
 /**/
     1476,