patch 9.1.0349: Vim9: need static type for typealias

Problem:  Vim9: need static type for typealias
Solution: Refactor the typval2type() function and add a static type for
          typealias (Yegappan Lakshmanan)

closes: #14582

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/globals.h b/src/globals.h
index 29ad7ed..2c00e5f 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -540,7 +540,10 @@
 #define t_class			(static_types[84])
 #define t_const_class		(static_types[85])
 
-EXTERN type_T static_types[86]
+#define t_typealias		(static_types[86])
+#define t_const_typealias	(static_types[87])
+
+EXTERN type_T static_types[88]
 #ifdef DO_INIT
 = {
     // 0: t_unknown
@@ -714,6 +717,10 @@
     // 84: t_class
     {VAR_CLASS, 0, 0, TTFLAG_STATIC, NULL, NULL, NULL},
     {VAR_CLASS, 0, 0, TTFLAG_STATIC|TTFLAG_CONST, NULL, NULL, NULL},
+
+    // 86: t_typealias
+    {VAR_TYPEALIAS, 0, 0, TTFLAG_STATIC, NULL, NULL, NULL},
+    {VAR_TYPEALIAS, 0, 0, TTFLAG_STATIC|TTFLAG_CONST, NULL, NULL, NULL},
 }
 #endif
 ;