Enable Scala Native tests with the test command on Scala 3

Author: Gedochao

modules/integration/src/test/scala/scala/cli/integration/TestTestDefinitions.scala

@@ -346,10 +346,9 @@ abstract class TestTestDefinitions extends ScalaCliSuite with TestScalaVersionAr
       expect(output.contains("Hello from tests"))
     }
 
-  if (actualScalaVersion.startsWith("2."))
-    test("successful test native") {
-      TestUtil.retryOnCi()(successfulNativeTest())
-    }
+  test("successful test native") {
+    TestUtil.retryOnCi()(successfulNativeTest())
+  }
 
   test("failing test") {
     failingTestInputs.fromRoot { root =>
@@ -377,10 +376,9 @@ abstract class TestTestDefinitions extends ScalaCliSuite with TestScalaVersionAr
       expect(output.contains("Hello from tests"))
     }
 
-  if (actualScalaVersion.startsWith("2."))
-    test("failing test native") {
-      TestUtil.retryOnCi()(failingNativeTest())
-    }
+  test("failing test native") {
+    TestUtil.retryOnCi()(failingNativeTest())
+  }
 
   test("failing test return code") {
     failingTestInputs.fromRoot { root =>
@@ -448,8 +446,7 @@ abstract class TestTestDefinitions extends ScalaCliSuite with TestScalaVersionAr
     }
   }
 
-  if (actualScalaVersion.startsWith("2."))
-    test("utest native") {
+  test("utest native") {
       TestUtil.retryOnCi()(utestNative())
     }