Don't check for full TASTY post-processig support on Scala 3 Next RC integration tests

Author: Gedochao

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

@@ -697,15 +697,4 @@ abstract class CompileTestDefinitions
       expect(out.contains("Too small maximum heap"))
     }
   }
-
-  test(s"TASTY processor does not warn about Scala $actualScalaVersion") {
-    TestInputs(os.rel / "simple.sc" -> s"""println("Hello")""")
-      .fromRoot { root =>
-        val result =
-          os.proc(TestUtil.cli, "compile", ".", extraOptions)
-            .call(cwd = root, stderr = os.Pipe)
-        expect(result.exitCode == 0)
-        expect(!result.err.text().contains("cannot post process TASTY files"))
-      }
-  }
 }

modules/integration/src/test/scala/scala/cli/integration/CompileTests3Lts.scala

@@ -1,3 +1,4 @@
 package scala.cli.integration
 
-class CompileTests3Lts extends CompileTestDefinitions with Test3Lts
+class CompileTests3Lts extends CompileTestDefinitions with CompileTests3StableDefinitions
+    with Test3Lts

modules/integration/src/test/scala/scala/cli/integration/CompileTests3StableDefinitions.scala

@@ -0,0 +1,17 @@
+package scala.cli.integration
+
+import com.eed3si9n.expecty.Expecty.expect
+
+trait CompileTests3StableDefinitions { _: CompileTestDefinitions =>
+  test(s"TASTY processor does not warn about Scala $actualScalaVersion") {
+    TestInputs(os.rel / "simple.sc" -> s"""println("Hello")""")
+      .fromRoot { root =>
+        val result =
+          os.proc(TestUtil.cli, "compile", ".", extraOptions)
+            .call(cwd = root, stderr = os.Pipe)
+        expect(result.exitCode == 0)
+        expect(!result.err.text().contains("cannot post process TASTY files"))
+      }
+  }
+
+}

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

@@ -4,7 +4,8 @@ import com.eed3si9n.expecty.Expecty.expect
 
 import java.io.File
 
-class CompileTestsDefault extends CompileTestDefinitions with TestDefault {
+class CompileTestsDefault extends CompileTestDefinitions with CompileTests3StableDefinitions
+    with TestDefault {
   test("render explain message") {
     val fileName = "Hello.scala"
     val inputs = TestInputs(