[JVM_IR] Fix inlining of callable references to extension methods.

Check directly that the referenced function is an extension
function instead of relying on the annotation on the type.

^ KT-47988 Fixed.

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

@@ -1571,6 +1571,11 @@ public class IrJsCodegenBoxES6TestGenerated extends AbstractIrJsCodegenBoxES6Tes
             runTest("compiler/testData/codegen/box/callableReference/kt46902.kt");
         }
 
+        @TestMetadata("kt47988.kt")
+        public void testKt47988() throws Exception {
+            runTest("compiler/testData/codegen/box/callableReference/kt47988.kt");
+        }
+
         @TestMetadata("nested.kt")
         public void testNested() throws Exception {
             runTest("compiler/testData/codegen/box/callableReference/nested.kt");

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

@@ -1571,6 +1571,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/callableReference/kt46902.kt");
         }
 
+        @TestMetadata("kt47988.kt")
+        public void testKt47988() throws Exception {
+            runTest("compiler/testData/codegen/box/callableReference/kt47988.kt");
+        }
+
         @TestMetadata("nested.kt")
         public void testNested() throws Exception {
             runTest("compiler/testData/codegen/box/callableReference/nested.kt");

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

@@ -1571,6 +1571,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/callableReference/kt46902.kt");
         }
 
+        @TestMetadata("kt47988.kt")
+        public void testKt47988() throws Exception {
+            runTest("compiler/testData/codegen/box/callableReference/kt47988.kt");
+        }
+
         @TestMetadata("nested.kt")
         public void testNested() throws Exception {
             runTest("compiler/testData/codegen/box/callableReference/nested.kt");

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

@@ -1346,6 +1346,11 @@ public class IrCodegenBoxWasmTestGenerated extends AbstractIrCodegenBoxWasmTest
             runTest("compiler/testData/codegen/box/callableReference/kt46902.kt");
         }
 
+        @TestMetadata("kt47988.kt")
+        public void testKt47988() throws Exception {
+            runTest("compiler/testData/codegen/box/callableReference/kt47988.kt");
+        }
+
         @TestMetadata("nested.kt")
         public void testNested() throws Exception {
             runTest("compiler/testData/codegen/box/callableReference/nested.kt");