[FIR] Fix some disappeared AMBIGUOUS_ANONYMOUS_TYPE_INFERRED

^KT-59932

Merge-request: KT-MR-12312
Merged-by: Vladimir Sukharev <Vladimir.Sukharev@jetbrains.com>

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirAmbiguousAnonymousTypeChecker.kt

@@ -40,13 +40,16 @@ object FirAmbiguousAnonymousTypeChecker : FirBasicDeclarationChecker() {
          * 2. `val x = ...`
          * 3. `val x get() = ...`
          */
-        val type = when (declaration) {
-            is FirProperty -> declaration.initializer?.resolvedType ?: declaration.getter?.body?.singleExpressionType
-            is FirFunction -> declaration.body?.singleExpressionType
+        val (type, source) = when (declaration) {
+            is FirProperty -> {
+                declaration.initializer?.resolvedType?.let { it to declaration.source }
+                    ?: (declaration.getter?.body?.singleExpressionType to declaration.getter?.source)
+            }
+            is FirFunction -> declaration.body?.singleExpressionType to declaration.source
             else -> error("Should not be there")
-        } ?: return
+        }
 
-        checkTypeAndArguments(type, context, reporter, declaration.source)
+        type?.let { checkTypeAndArguments(it, context, reporter, source) }
     }
 
     private fun checkTypeAndArguments(

compiler/testData/diagnostics/tests/declarationChecks/ambiguousObjectExpressionType.fir.kt

@@ -38,8 +38,8 @@ class Foo(val myTrait: MyTrait) {
 
     <!AMBIGUOUS_ANONYMOUS_TYPE_INFERRED!>public val publicProperty<!> = object : MyClass(), MyTrait {}
 
-    <!AMBIGUOUS_ANONYMOUS_TYPE_INFERRED!>val propertyWithGetter<!>
-    get() = object: MyClass(), MyTrait {}
+    val propertyWithGetter
+    <!AMBIGUOUS_ANONYMOUS_TYPE_INFERRED!>get()<!> = object: MyClass(), MyTrait {}
 
     private val privateDelegateProperty by lazy { object : MyClass(), MyTrait {} }
     val publicDelegatePropertyWithSingleSuperType by lazy {