topLevelVarInit finally works, even with infrencing

tests/test_topLevelVarInit.krak

@@ -1,8 +1,10 @@
 import io;
 
 var a: int = 42;
+var b = "hi";
 
 fun main(): int {
     io::println(a);
+    io::println(b);
     return 0;
 }