[LL FIR] support lazy resolve for fake override declarations

^KT-58727 Fixed

analysis/analysis-api/testData/components/scopeProvider/delegatedMemberScope/withImplicitType.pretty.txt

@@ -1,3 +1,3 @@
-open fun foo(): ERROR(empty body)
+open fun foo(): kotlin.Int
 
-open fun bar(): kotlin.Int
+open fun bar(): kotlin.Int

analysis/analysis-api/testData/components/scopeProvider/delegatedMemberScope/withImplicitType.txt

@@ -17,9 +17,10 @@ KtFunctionSymbol:
   name: foo
   origin: DELEGATED
   receiverParameter: null
-  returnType: KtTypeErrorType:
+  returnType: KtUsualClassType:
     annotationsList: []
-    type: ERROR CLASS: empty body
+    ownTypeArguments: []
+    type: kotlin/Int
   symbolKind: CLASS_MEMBER
   typeParameters: []
   valueParameters: []