FIR checker: report SETTER_PROJECTED_OUT

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

@@ -2250,6 +2250,13 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.SETTER_PROJECTED_OUT) { firDiagnostic ->
+        SetterProjectedOutImpl(
+            firSymbolBuilder.variableLikeBuilder.buildVariableSymbol(firDiagnostic.a.fir),
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.WRONG_INVOCATION_KIND) { firDiagnostic ->
         WrongInvocationKindImpl(
             firSymbolBuilder.buildSymbol(firDiagnostic.a.fir as FirDeclaration),

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

@@ -1585,6 +1585,11 @@ sealed class KtFirDiagnostic<PSI: PsiElement> : KtDiagnosticWithPsi<PSI> {
         abstract val property: KtVariableSymbol
     }
 
+    abstract class SetterProjectedOut : KtFirDiagnostic<KtBinaryExpression>() {
+        override val diagnosticClass get() = SetterProjectedOut::class
+        abstract val property: KtVariableSymbol
+    }
+
     abstract class WrongInvocationKind : KtFirDiagnostic<PsiElement>() {
         override val diagnosticClass get() = WrongInvocationKind::class
         abstract val declaration: KtSymbol

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

@@ -2564,6 +2564,14 @@ internal class CapturedMemberValInitializationImpl(
     override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
 }
 
+internal class SetterProjectedOutImpl(
+    override val property: KtVariableSymbol,
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.SetterProjectedOut(), KtAbstractFirDiagnostic<KtBinaryExpression> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
 internal class WrongInvocationKindImpl(
     override val declaration: KtSymbol,
     override val requiredRange: EventOccurrencesRange,