[FIR] Relax MULTIPLE_DEFAULTS_* to account for the K1 behavior

^KT-56442
^KT-36188

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

@@ -2602,6 +2602,34 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.MULTIPLE_DEFAULTS_INHERITED_FROM_SUPERTYPES_DEPRECATION.errorFactory) { firDiagnostic ->
+        MultipleDefaultsInheritedFromSupertypesDeprecationErrorImpl(
+            firSymbolBuilder.buildSymbol(firDiagnostic.a),
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
+    add(FirErrors.MULTIPLE_DEFAULTS_INHERITED_FROM_SUPERTYPES_DEPRECATION.warningFactory) { firDiagnostic ->
+        MultipleDefaultsInheritedFromSupertypesDeprecationWarningImpl(
+            firSymbolBuilder.buildSymbol(firDiagnostic.a),
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
+    add(FirErrors.MULTIPLE_DEFAULTS_INHERITED_FROM_SUPERTYPES_WHEN_NO_EXPLICIT_OVERRIDE_DEPRECATION.errorFactory) { firDiagnostic ->
+        MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationErrorImpl(
+            firSymbolBuilder.buildSymbol(firDiagnostic.a),
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
+    add(FirErrors.MULTIPLE_DEFAULTS_INHERITED_FROM_SUPERTYPES_WHEN_NO_EXPLICIT_OVERRIDE_DEPRECATION.warningFactory) { firDiagnostic ->
+        MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationWarningImpl(
+            firSymbolBuilder.buildSymbol(firDiagnostic.a),
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.TYPEALIAS_EXPANDS_TO_ARRAY_OF_NOTHINGS) { firDiagnostic ->
         TypealiasExpandsToArrayOfNothingsImpl(
             firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.a),

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

@@ -1849,6 +1849,26 @@ sealed interface KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         val valueParameter: KtSymbol
     }
 
+    interface MultipleDefaultsInheritedFromSupertypesDeprecationError : KtFirDiagnostic<KtElement> {
+        override val diagnosticClass get() = MultipleDefaultsInheritedFromSupertypesDeprecationError::class
+        val valueParameter: KtSymbol
+    }
+
+    interface MultipleDefaultsInheritedFromSupertypesDeprecationWarning : KtFirDiagnostic<KtElement> {
+        override val diagnosticClass get() = MultipleDefaultsInheritedFromSupertypesDeprecationWarning::class
+        val valueParameter: KtSymbol
+    }
+
+    interface MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationError : KtFirDiagnostic<KtElement> {
+        override val diagnosticClass get() = MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationError::class
+        val valueParameter: KtSymbol
+    }
+
+    interface MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationWarning : KtFirDiagnostic<KtElement> {
+        override val diagnosticClass get() = MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationWarning::class
+        val valueParameter: KtSymbol
+    }
+
     interface TypealiasExpandsToArrayOfNothings : KtFirDiagnostic<KtElement> {
         override val diagnosticClass get() = TypealiasExpandsToArrayOfNothings::class
         val type: KtType

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

@@ -2221,6 +2221,30 @@ internal class MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideImpl
     token: KtLifetimeToken,
 ) : KtAbstractFirDiagnostic<KtElement>(firDiagnostic, token), KtFirDiagnostic.MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverride
 
+internal class MultipleDefaultsInheritedFromSupertypesDeprecationErrorImpl(
+    override val valueParameter: KtSymbol,
+    firDiagnostic: KtPsiDiagnostic,
+    token: KtLifetimeToken,
+) : KtAbstractFirDiagnostic<KtElement>(firDiagnostic, token), KtFirDiagnostic.MultipleDefaultsInheritedFromSupertypesDeprecationError
+
+internal class MultipleDefaultsInheritedFromSupertypesDeprecationWarningImpl(
+    override val valueParameter: KtSymbol,
+    firDiagnostic: KtPsiDiagnostic,
+    token: KtLifetimeToken,
+) : KtAbstractFirDiagnostic<KtElement>(firDiagnostic, token), KtFirDiagnostic.MultipleDefaultsInheritedFromSupertypesDeprecationWarning
+
+internal class MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationErrorImpl(
+    override val valueParameter: KtSymbol,
+    firDiagnostic: KtPsiDiagnostic,
+    token: KtLifetimeToken,
+) : KtAbstractFirDiagnostic<KtElement>(firDiagnostic, token), KtFirDiagnostic.MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationError
+
+internal class MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationWarningImpl(
+    override val valueParameter: KtSymbol,
+    firDiagnostic: KtPsiDiagnostic,
+    token: KtLifetimeToken,
+) : KtAbstractFirDiagnostic<KtElement>(firDiagnostic, token), KtFirDiagnostic.MultipleDefaultsInheritedFromSupertypesWhenNoExplicitOverrideDeprecationWarning
+
 internal class TypealiasExpandsToArrayOfNothingsImpl(
     override val type: KtType,
     firDiagnostic: KtPsiDiagnostic,