[FIR] Don't generate property fields when context receivers are present

^KT-59874

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/body/resolve/BodyResolveContext.kt

@@ -834,7 +834,8 @@ class BodyResolveContext(
             val receiverTypeRef = property.receiverParameter?.typeRef
             addLocalScope(FirLocalScope(holder.session))
             if (!forContracts && receiverTypeRef == null && property.returnTypeRef !is FirImplicitTypeRef &&
-                !property.isLocal && property.delegate == null
+                !property.isLocal && property.delegate == null &&
+                property.contextReceivers.isEmpty()
             ) {
                 storeBackingField(property, holder.session)
             }

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithReceiverLabelsProperties.fir.kt

@@ -4,7 +4,7 @@ class A<T>(val a: T)
 class B(val b: Any)
 class C(val c: Any)
 
-<!MUST_BE_INITIALIZED!>context(A<String>, B) var p: Int<!>
+context(A<String>, B) var p: Int
     get() {
         this@A.a.length
         this@B.b
@@ -15,10 +15,10 @@ class C(val c: Any)
         this@A.a.length
         this@B.b
         <!NO_THIS!>this<!>
-        field = value
+        <!UNRESOLVED_REFERENCE!>field<!> = value
     }
 
-<!MUST_BE_INITIALIZED!>context(A<Int>, A<String>, B) var p: Int<!>
+context(A<Int>, A<String>, B) var p: Int
     get() {
         this@A.a.<!UNRESOLVED_REFERENCE!>toDouble<!>()
         this@A.a.length
@@ -30,7 +30,7 @@ class C(val c: Any)
         this@A.a.length
         this@B.b
         <!NO_THIS!>this<!>
-        field = value
+        <!UNRESOLVED_REFERENCE!>field<!> = value
     }
 
 context(A<Int>, A<String>, B) val C.p: Int