KT-53846 LT: Copy context receivers to secondary constructors

compiler/fir/raw-fir/light-tree2fir/src/org/jetbrains/kotlin/fir/lightTree/converter/DeclarationsConverter.kt

@@ -1051,6 +1051,7 @@ class DeclarationsConverter(
             val (body, _) = convertFunctionBody(block, null, allowLegacyContractDescription = true)
             this.body = body
             context.firFunctionTargets.removeLast()
+            this.contextReceivers.addAll(convertContextReceivers(secondaryConstructor.getParent()!!.getParent()!!))
         }.also {
             it.containingClassForStaticMemberAttr = currentDispatchReceiverType()!!.lookupTag
             target.bind(it)

compiler/testData/codegen/box/extensionClasses/constructors.kt

@@ -1,8 +1,6 @@
 // !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_K2: JS_IR
-// IGNORE_BACKEND_K2_LIGHT_TREE: JVM_IR
-//   Reason: KT-56508
 // WITH_STDLIB
 
 class A(val ok: String)

compiler/testData/codegen/box/extensionFunctions/contextReceivers/kt53846.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND_K2_LIGHT_TREE: JVM_IR
-//   Reason: KT-53846
 // !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR