[FIR] Add FUNCTION_DELEGATE_MEMBER_NAME_CLASH

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

@@ -3626,6 +3626,12 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirJvmErrors.FUNCTION_DELEGATE_MEMBER_NAME_CLASH) { firDiagnostic ->
+        FunctionDelegateMemberNameClashImpl(
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
     add(FirJvmErrors.JAVA_TYPE_MISMATCH) { firDiagnostic ->
         JavaTypeMismatchImpl(
             firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.a),

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

@@ -2525,6 +2525,10 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = IllegalJvmName::class
     }
 
+    abstract class FunctionDelegateMemberNameClash : KtFirDiagnostic<PsiElement>() {
+        override val diagnosticClass get() = FunctionDelegateMemberNameClash::class
+    }
+
     abstract class JavaTypeMismatch : KtFirDiagnostic<KtExpression>() {
         override val diagnosticClass get() = JavaTypeMismatch::class
         abstract val expectedType: KtType

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

@@ -4095,6 +4095,13 @@ internal class IllegalJvmNameImpl(
     override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
 }
 
+internal class FunctionDelegateMemberNameClashImpl(
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.FunctionDelegateMemberNameClash(), KtAbstractFirDiagnostic<PsiElement> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
 internal class JavaTypeMismatchImpl(
     override val expectedType: KtType,
     override val actualType: KtType,