False positive removed in replace single line let intention #KT-14791 Fixed

idea/testData/intentions/replaceSingleLineLetIntention/smartCastInBody.kt

@@ -0,0 +1,15 @@
+// IS_APPLICABLE: false
+// WITH_RUNTIME
+
+interface A
+
+interface B : A {
+    val bar: Any?
+}
+
+class Foo {
+    private val a: A = object : A {}
+
+    val isB: Boolean
+        get() = a.let<caret> { it is B && it.bar != null }
+}