Checking for conflicting substitutors in completion after "by"

idea/idea-completion/testData/smart/propertyDelegate/ConflictingSubstitutors.kt

@@ -0,0 +1,11 @@
+import kotlin.reflect.KProperty
+
+class X<T> {
+    operator fun getValue(thisRef: T, property: KProperty<*>): T = throw Exception()
+}
+
+class C<T> {
+    val property: Int by <caret>
+}
+
+// ABSENT: X

idea/idea-completion/testData/smart/propertyDelegate/NonConflictingSubstitutors.kt

@@ -0,0 +1,11 @@
+import kotlin.reflect.KProperty
+
+class X<T>(t: T) {
+    operator fun getValue(thisRef: T, property: KProperty<*>): T = throw Exception()
+}
+
+class C<T> {
+    val property: C<T> by <caret>
+}
+
+// EXIST: { itemText: "X", tailText: "(t: C<T>) (<root>)" }