KT-38003 works for Java implementations of extension method

idea/testData/slicer/outflow/abstractExtensionMethodParameter.java

@@ -0,0 +1,6 @@
+class JavaClass implements I {
+    @Override
+    public void foo(int receiver, Object p) {
+        System.out.println(p);
+    }
+}

idea/testData/slicer/outflow/abstractExtensionMethodParameter.kt

@@ -0,0 +1,15 @@
+// FLOW: OUT
+
+interface I {
+    fun Int.foo(p: Any)
+}
+
+class C1 : I {
+    override fun Int.foo(p: Any) {
+        println(p) // this usage will be shown twice due to bug in Java implementation: https://youtrack.jetbrains.com/issue/IDEA-236958
+    }
+}
+
+fun I.bar(s: String) {
+    1.foo(<caret>s)
+}

idea/testData/slicer/outflow/abstractExtensionMethodParameter.results.txt

@@ -0,0 +1,7 @@
+14 1.foo(<bold>s</bold>)
+4 	fun Int.foo(<bold>p: Any</bold>)
+3 		public void foo(int receiver, Object <bold>p</bold>) {
+4 			System.out.println(<bold>p</bold>);
+9 			println(<bold>p</bold>) // this usage will be shown twice due to bug in Java implementation: https://youtrack.jetbrains.com/issue/IDEA-236958
+8 		override fun Int.foo(<bold>p: Any</bold>) {
+9 			DUPLICATE: println(<bold>p</bold>) // this usage will be shown twice due to bug in Java implementation: https://youtrack.jetbrains.com/issue/IDEA-236958