Process only correct implicit receivers

idea/testData/slicer/outflow/implicitReceiver.kt

@@ -1,13 +1,19 @@
 // FLOW: OUT
 
-fun Any.extensionFun(): Any {
-    return this
-}
+class C {
+    fun Int.outer() {
+        fun String.stringExtensionFun() = this
+        fun Int.intExtensionFun() = this
+        fun C.cExtensionFun() = this
 
-fun String.foo() {
-    val v = extensionFun()
-}
+        fun String.foo() {
+            val string = stringExtensionFun()
+            val int = intExtensionFun()
+            val c = cExtensionFun()
+        }
 
-fun main() {
-    <caret>"A".foo()
+        fun bar() {
+            <caret>"A".foo()
+        }
+    }
 }

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

@@ -1,7 +1,7 @@
-12 <bold>"A"</bold>.foo()
-7 	fun <bold>String</bold>.foo() {
-3 		fun <bold>Any</bold>.extensionFun(): Any {
-4 			return <bold>this</bold>
-3 				fun Any.<bold>extensionFun(): Any {</bold>
-8 					val v = <bold>extensionFun()</bold>
-8 						val <bold>v = extensionFun()</bold>
+16 <bold>"A"</bold>.foo()
+9 	fun <bold>String</bold>.foo() {
+5 		fun <bold>String</bold>.stringExtensionFun() = this
+5 			fun String.stringExtensionFun() = <bold>this</bold>
+5 				fun String.<bold>stringExtensionFun() = this</bold>
+10 					val string = <bold>stringExtensionFun()</bold>
+10 						val <bold>string = stringExtensionFun()</bold>