[JS IR] Fix creating of classes extended from nested one

[JS IR] Extract getClassRef method

 ^KT-44950 fixed

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/es6/semantics/IrJsCodegenBoxES6TestGenerated.java

@@ -14349,6 +14349,11 @@ public class IrJsCodegenBoxES6TestGenerated extends AbstractIrJsCodegenBoxES6Tes
             runTest("compiler/testData/codegen/box/innerNested/createdNestedInOuterMember.kt");
         }
 
+        @TestMetadata("extenderNestedClass.kt")
+        public void testExtenderNestedClass() throws Exception {
+            runTest("compiler/testData/codegen/box/innerNested/extenderNestedClass.kt");
+        }
+
         @TestMetadata("extensionFun.kt")
         public void testExtensionFun() throws Exception {
             runTest("compiler/testData/codegen/box/innerNested/extensionFun.kt");

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java

@@ -13806,6 +13806,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/innerNested/createdNestedInOuterMember.kt");
         }
 
+        @TestMetadata("extenderNestedClass.kt")
+        public void testExtenderNestedClass() throws Exception {
+            runTest("compiler/testData/codegen/box/innerNested/extenderNestedClass.kt");
+        }
+
         @TestMetadata("extensionFun.kt")
         public void testExtensionFun() throws Exception {
             runTest("compiler/testData/codegen/box/innerNested/extensionFun.kt");

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -13871,6 +13871,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/innerNested/createdNestedInOuterMember.kt");
         }
 
+        @TestMetadata("extenderNestedClass.kt")
+        public void testExtenderNestedClass() throws Exception {
+            runTest("compiler/testData/codegen/box/innerNested/extenderNestedClass.kt");
+        }
+
         @TestMetadata("extensionFun.kt")
         public void testExtensionFun() throws Exception {
             runTest("compiler/testData/codegen/box/innerNested/extensionFun.kt");

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/wasm/semantics/IrCodegenBoxWasmTestGenerated.java

@@ -7927,6 +7927,11 @@ public class IrCodegenBoxWasmTestGenerated extends AbstractIrCodegenBoxWasmTest
             runTest("compiler/testData/codegen/box/innerNested/createdNestedInOuterMember.kt");
         }
 
+        @TestMetadata("extenderNestedClass.kt")
+        public void testExtenderNestedClass() throws Exception {
+            runTest("compiler/testData/codegen/box/innerNested/extenderNestedClass.kt");
+        }
+
         @TestMetadata("extensionFun.kt")
         public void testExtensionFun() throws Exception {
             runTest("compiler/testData/codegen/box/innerNested/extensionFun.kt");