Call chain into sequence: fix false negative on Iterable

#KT-26650 Fixed

idea/testData/inspectionsLocal/collections/convertCallChainIntoSequence/iterable.kt

@@ -0,0 +1,5 @@
+// WITH_RUNTIME
+
+fun test(i: Iterable<Int>): List<Int> {
+    return i.<caret>filter { it > 1 }.map { it * 2 }
+}

idea/testData/inspectionsLocal/collections/convertCallChainIntoSequence/iterable.kt.after

@@ -0,0 +1,5 @@
+// WITH_RUNTIME
+
+fun test(i: Iterable<Int>): List<Int> {
+    return i.asSequence().filter { it > 1 }.map { it * 2 }.toList()
+}

idea/testData/inspectionsLocal/collections/convertCallChainIntoSequence/iterable2.kt

@@ -0,0 +1,9 @@
+// WITH_RUNTIME
+
+class A<T>(private val list: List<T>) : Iterable<T> {
+    override fun iterator(): Iterator<T> = list.iterator()
+}
+
+fun test(i: A<Int>): List<Int> {
+    return i.<caret>filter { it > 1 }.map { it * 2 }
+}

idea/testData/inspectionsLocal/collections/convertCallChainIntoSequence/iterable2.kt.after

@@ -0,0 +1,9 @@
+// WITH_RUNTIME
+
+class A<T>(private val list: List<T>) : Iterable<T> {
+    override fun iterator(): Iterator<T> = list.iterator()
+}
+
+fun test(i: A<Int>): List<Int> {
+    return i.asSequence().filter { it > 1 }.map { it * 2 }.toList()
+}