K2: get rid of manual diagnostic suppression in checkers

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostics/FileStructureElementDiagnosticRetriever.kt

@@ -14,6 +14,7 @@ import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
 import org.jetbrains.kotlin.fir.analysis.collectors.components.AbstractDiagnosticCollectorComponent
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.resolve.SessionHolderImpl
+import org.jetbrains.kotlin.name.StandardClassIds
 
 internal abstract class FileStructureElementDiagnosticRetriever {
     abstract fun retrieve(
@@ -60,6 +61,7 @@ internal class SingleNonLocalDeclarationDiagnosticRetriever(
             return when {
                 structureElementDeclaration !is FirRegularClass -> true
                 structureElementDeclaration == declaration -> true
+                declaration.hasAnnotation(StandardClassIds.Annotations.Suppress) -> true
                 else -> false
             }
         }

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerFirTestdataTestGenerated.java

@@ -4216,6 +4216,12 @@ public class DiagnosisCompilerFirTestdataTestGenerated extends AbstractDiagnosis
             public void testWithSuppression() throws Exception {
                 runTest("compiler/fir/analysis-tests/testData/resolve/suppress/withSuppression.kt");
             }
+
+            @Test
+            @TestMetadata("withSuppression2.kt")
+            public void testWithSuppression2() throws Exception {
+                runTest("compiler/fir/analysis-tests/testData/resolve/suppress/withSuppression2.kt");
+            }
         }
 
         @Nested