JS: replace noImpl with definedExternally in tests

js/js.translator/testData/box/crossModuleRef/topLevelFunction.kt

@@ -5,7 +5,7 @@ package lib
 
 fun foo() = 23
 
-external fun bar(): Int = noImpl
+external fun bar(): Int = definedExternally
 
 inline fun baz() = 99
 

js/js.translator/testData/box/crossModuleRef/topLevelProperty.kt

@@ -7,10 +7,10 @@ val foo = 23
 val boo: Int
     get() = 42
 
-external val bar: Int = noImpl
+external val bar: Int = definedExternally
 
 external val far: Int
-    get() = noImpl
+    get() = definedExternally
 
 // TODO: annotations like this are not serialized properly. Uncomment after KT-14529 gets fixed
 /*