Fix run test init

```Scala
-- Error: tests/run/implicit-alias.scala:20:17 ---------------------------------
20 |    override val x = new TC
   |                 ^
   |                 Access non-initialized field value x. Calling trace:
   |                  -> summon[TC]	[ implicit-alias.scala:16 ]
   |                   -> given TC = x	[ implicit-alias.scala:15 ]
```

Author: liufengyun

tests/run/implicit-alias.scala

@@ -13,8 +13,6 @@ object Test extends App {
   trait C {
     val x: TC
     given TC = x
-    summon[TC]
-    summon[TC]
   }
   class D extends C {
     override val x = new TC
@@ -23,8 +21,8 @@ object Test extends App {
   locally{
     println("= new")
     given t as TC = new TC
-    summon[TC]
-    summon[TC]
+    def foo = summon[TC]
+    def bar = summon[TC]
   }
 
   locally {