[Test] Require specifying parser for FIR test. Unify names for FIR tests

Now all tests with `Fir` in name are named accordingly to parser which
  is used in them -- `FirPsi` or `FirLightTree`. This is needed to keep
  consistency between different types of tests, because there is no
  single default in parser mode between different scenarios of using FIR

plugins/sam-with-receiver/tests-gen/org/jetbrains/kotlin/samWithReceiver/FirLightTreeBlackBoxCodegenTestForSamWithReceiverGenerated.java

@@ -19,7 +19,7 @@ import java.util.regex.Pattern;
 @SuppressWarnings("all")
 @TestMetadata("plugins/sam-with-receiver/testData/codegen")
 @TestDataPath("$PROJECT_ROOT")
-public class FirBlackBoxCodegenTestForSamWithReceiverGenerated extends AbstractFirBlackBoxCodegenTestForSamWithReceiver {
+public class FirLightTreeBlackBoxCodegenTestForSamWithReceiverGenerated extends AbstractFirLightTreeBlackBoxCodegenTestForSamWithReceiver {
     @Test
     public void testAllFilesPresentInCodegen() throws Exception {
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("plugins/sam-with-receiver/testData/codegen"), Pattern.compile("^(.+)\\.kt$"), Pattern.compile("^(.+)\\.fir\\.kts?$"), TargetBackend.JVM_IR, true);

plugins/sam-with-receiver/tests-gen/org/jetbrains/kotlin/samWithReceiver/FirPsiSamWithReceiverDiagnosticTestGenerated.java

@@ -18,7 +18,7 @@ import java.util.regex.Pattern;
 @SuppressWarnings("all")
 @TestMetadata("plugins/sam-with-receiver/testData/diagnostics")
 @TestDataPath("$PROJECT_ROOT")
-public class FirSamWithReceiverTestGenerated extends AbstractFirSamWithReceiverTest {
+public class FirPsiSamWithReceiverDiagnosticTestGenerated extends AbstractFirPsiSamWithReceiverDiagnosticTest {
     @Test
     public void testAllFilesPresentInDiagnostics() throws Exception {
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("plugins/sam-with-receiver/testData/diagnostics"), Pattern.compile("^(.+)\\.kt$"), Pattern.compile("^(.+)\\.fir\\.kts?$"), true);