FIR: fix suspend type serialization

compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -12034,6 +12034,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)
     public static class Fir extends AbstractLightAnalysisModeTest {
+        @TestMetadata("SuspendExtension.kt")
+        public void ignoreSuspendExtension() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/SuspendExtension.kt");
+        }
+
         private void runTest(String testDataFilePath) throws Exception {
             KotlinTestUtils.runTest(this::doTest, TargetBackend.JVM, testDataFilePath);
         }