FIR: support separate ANONYMOUS_FUNCTION_WITH_NAME

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt

@@ -1320,6 +1320,12 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.ANONYMOUS_FUNCTION_WITH_NAME) { firDiagnostic ->
+        AnonymousFunctionWithNameImpl(
+            firDiagnostic as FirPsiDiagnostic<*>,
+            token,
+        )
+    }
     add(FirErrors.ANONYMOUS_FUNCTION_PARAMETER_WITH_DEFAULT_VALUE) { firDiagnostic ->
         AnonymousFunctionParameterWithDefaultValueImpl(
             firDiagnostic as FirPsiDiagnostic<*>,

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -937,6 +937,10 @@ sealed class KtFirDiagnostic<PSI: PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = FunctionDeclarationWithNoName::class
     }
 
+    abstract class AnonymousFunctionWithName : KtFirDiagnostic<KtFunction>() {
+        override val diagnosticClass get() = AnonymousFunctionWithName::class
+    }
+
     abstract class AnonymousFunctionParameterWithDefaultValue : KtFirDiagnostic<KtParameter>() {
         override val diagnosticClass get() = AnonymousFunctionParameterWithDefaultValue::class
     }

idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -1508,6 +1508,13 @@ internal class FunctionDeclarationWithNoNameImpl(
     override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
 }
 
+internal class AnonymousFunctionWithNameImpl(
+    firDiagnostic: FirPsiDiagnostic<*>,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.AnonymousFunctionWithName(), KtAbstractFirDiagnostic<KtFunction> {
+    override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
+}
+
 internal class AnonymousFunctionParameterWithDefaultValueImpl(
     firDiagnostic: FirPsiDiagnostic<*>,
     override val token: ValidityToken,