Support plugin intrinsics for serializer() function in K2.

- Add IrPluginContext to JvmBackendContext, so plugin intrinsics can
reference external functions properly.

- Do not use module.findClassAcrossModuleDependencies as Descriptor API does not work for FIR.

- Add asm listing tests in serialization plugin for K2

- Remove Delegated.kt asm listing test as we have similar test in boxIr group.

#KT-56553 Fixed

plugins/kotlinx-serialization/tests/org/jetbrains/kotlinx/serialization/TestGenerator.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -38,6 +38,10 @@ fun main(args: Array<String>) {
                 model("codegen")
             }
 
+            testClass<AbstractSerializationFir2IrAsmLikeInstructionsListingTest> {
+                model("codegen")
+            }
+
             // ------------------------------- box -------------------------------
 
             testClass<AbstractSerializationIrBoxTest> {

plugins/kotlinx-serialization/tests/org/jetbrains/kotlinx/serialization/runners/AsmLikeInstructionsListingTests.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -28,6 +28,16 @@ open class AbstractSerializationIrAsmLikeInstructionsListingTest : AbstractIrAsm
     }
 }
 
+open class AbstractSerializationFir2IrAsmLikeInstructionsListingTest : AbstractFirAsmLikeInstructionListingTest() {
+    override fun configure(builder: TestConfigurationBuilder) {
+        super.configure(builder)
+        builder.defaultDirectives {
+            +AsmLikeInstructionListingDirectives.FIR_DIFFERENCE
+        }
+        builder.configureForKotlinxSerialization()
+    }
+}
+
 private fun TestConfigurationBuilder.enableDifference() {
     defaultDirectives {
         +AsmLikeInstructionListingDirectives.IR_DIFFERENCE