FIR checker: pass expected array type in ASSIGNING_SINGLE_ELEMENT_TO_VARARG_IN_NAMED_FORM_FUNCTION

This is needed by the IDE quickfix to generate the correct `arrayOf` (or
`intArrayOf`, etc`) wrapper call.

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

@@ -1475,12 +1475,14 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
     }
     add(FirErrors.ASSIGNING_SINGLE_ELEMENT_TO_VARARG_IN_NAMED_FORM_FUNCTION.errorFactory) { firDiagnostic ->
         AssigningSingleElementToVarargInNamedFormFunctionErrorImpl(
+            firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.a),
             firDiagnostic as KtPsiDiagnostic,
             token,
         )
     }
     add(FirErrors.ASSIGNING_SINGLE_ELEMENT_TO_VARARG_IN_NAMED_FORM_FUNCTION.warningFactory) { firDiagnostic ->
         AssigningSingleElementToVarargInNamedFormFunctionWarningImpl(
+            firSymbolBuilder.typeBuilder.buildKtType(firDiagnostic.a),
             firDiagnostic as KtPsiDiagnostic,
             token,
         )

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

@@ -1062,10 +1062,12 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
 
     abstract class AssigningSingleElementToVarargInNamedFormFunctionError : KtFirDiagnostic<KtExpression>() {
         override val diagnosticClass get() = AssigningSingleElementToVarargInNamedFormFunctionError::class
+        abstract val expectedArrayType: KtType
     }
 
     abstract class AssigningSingleElementToVarargInNamedFormFunctionWarning : KtFirDiagnostic<KtExpression>() {
         override val diagnosticClass get() = AssigningSingleElementToVarargInNamedFormFunctionWarning::class
+        abstract val expectedArrayType: KtType
     }
 
     abstract class AssigningSingleElementToVarargInNamedFormAnnotationError : KtFirDiagnostic<KtExpression>() {

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

@@ -1270,11 +1270,13 @@ internal class SpreadOfNullableImpl(
 ) : KtFirDiagnostic.SpreadOfNullable(), KtAbstractFirDiagnostic<PsiElement>
 
 internal class AssigningSingleElementToVarargInNamedFormFunctionErrorImpl(
+    override val expectedArrayType: KtType,
     override val firDiagnostic: KtPsiDiagnostic,
     override val token: ValidityToken,
 ) : KtFirDiagnostic.AssigningSingleElementToVarargInNamedFormFunctionError(), KtAbstractFirDiagnostic<KtExpression>
 
 internal class AssigningSingleElementToVarargInNamedFormFunctionWarningImpl(
+    override val expectedArrayType: KtType,
     override val firDiagnostic: KtPsiDiagnostic,
     override val token: ValidityToken,
 ) : KtFirDiagnostic.AssigningSingleElementToVarargInNamedFormFunctionWarning(), KtAbstractFirDiagnostic<KtExpression>