[FIR] Report warning on non-deprecated overrides of deprecated members

^KT-47902

idea/idea-frontend-fir/idea-frontend-fir-generator/src/org/jetbrains/kotlin/idea/frontend/api/fir/generator/HLDiagnosticConverter.kt

@@ -31,6 +31,7 @@ import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.KtExpression
 import org.jetbrains.kotlin.resolve.ForbiddenNamedArgumentsTarget
+import org.jetbrains.kotlin.resolve.deprecation.Deprecation
 import org.jetbrains.kotlin.resolve.multiplatform.ExpectActualCompatibility
 import org.jetbrains.kotlin.types.Variance
 import kotlin.reflect.KClass
@@ -336,6 +337,7 @@ private object FirToKtConversionCreator {
         FqName::class,
         FirModuleData::class,
         ExpectActualCompatibility.Incompatible::class,
+        Deprecation::class,
     )
 
     private val KType.kClass: KClass<*>

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

@@ -761,6 +761,14 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.OVERRIDE_DEPRECATION) { firDiagnostic ->
+        OverrideDeprecationImpl(
+            firSymbolBuilder.buildSymbol(firDiagnostic.a.fir),
+            firDiagnostic.b,
+            firDiagnostic as FirPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.ANNOTATION_ON_SUPERCLASS.errorFactory) { firDiagnostic ->
         AnnotationOnSuperclassErrorImpl(
             firDiagnostic as FirPsiDiagnostic,

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

@@ -70,6 +70,7 @@ import org.jetbrains.kotlin.psi.KtWhenCondition
 import org.jetbrains.kotlin.psi.KtWhenEntry
 import org.jetbrains.kotlin.psi.KtWhenExpression
 import org.jetbrains.kotlin.resolve.ForbiddenNamedArgumentsTarget
+import org.jetbrains.kotlin.resolve.deprecation.Deprecation
 import org.jetbrains.kotlin.resolve.multiplatform.ExpectActualCompatibility.Incompatible
 import org.jetbrains.kotlin.types.Variance
 
@@ -548,6 +549,12 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = DeprecatedSinceKotlinOutsideKotlinSubpackage::class
     }
 
+    abstract class OverrideDeprecation : KtFirDiagnostic<KtNamedDeclaration>() {
+        override val diagnosticClass get() = OverrideDeprecation::class
+        abstract val overridenSymbol: KtSymbol
+        abstract val deprecationInfo: Deprecation
+    }
+
     abstract class AnnotationOnSuperclassError : KtFirDiagnostic<KtAnnotationEntry>() {
         override val diagnosticClass get() = AnnotationOnSuperclassError::class
     }

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

@@ -72,6 +72,7 @@ import org.jetbrains.kotlin.psi.KtWhenCondition
 import org.jetbrains.kotlin.psi.KtWhenEntry
 import org.jetbrains.kotlin.psi.KtWhenExpression
 import org.jetbrains.kotlin.resolve.ForbiddenNamedArgumentsTarget
+import org.jetbrains.kotlin.resolve.deprecation.Deprecation
 import org.jetbrains.kotlin.resolve.multiplatform.ExpectActualCompatibility.Incompatible
 import org.jetbrains.kotlin.types.Variance
 
@@ -876,6 +877,15 @@ internal class DeprecatedSinceKotlinOutsideKotlinSubpackageImpl(
     override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
 }
 
+internal class OverrideDeprecationImpl(
+    override val overridenSymbol: KtSymbol,
+    override val deprecationInfo: Deprecation,
+    firDiagnostic: FirPsiDiagnostic,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.OverrideDeprecation(), KtAbstractFirDiagnostic<KtNamedDeclaration> {
+    override val firDiagnostic: FirPsiDiagnostic by weakRef(firDiagnostic)
+}
+
 internal class AnnotationOnSuperclassErrorImpl(
     firDiagnostic: FirPsiDiagnostic,
     override val token: ValidityToken,