Simplify call: Fix false positive in "filter {}" detection (KT-32468)

"Simplify filter {}" conversion changes semantics when the casted type is not a subtype if an initial collection element type.
This commit limits a replacement suggestion to subtype cases.

idea/testData/inspectionsLocal/collections/simplifiableCall/filterIsInstanceDisjointHierarchy.kt

@@ -0,0 +1,7 @@
+// WITH_RUNTIME
+// PROBLEM: none
+
+interface Foo
+interface Bar
+
+fun instanceOfMarkerInterface(x: List<Foo>): List<Foo> = x.<caret>filter { it is Bar }

idea/testData/inspectionsLocal/collections/simplifiableCall/filterIsInstanceSupertype.kt

@@ -0,0 +1,7 @@
+// WITH_RUNTIME
+// PROBLEM: none
+
+interface Foo
+interface Bar : Foo
+
+fun instanceOfMarkerInterface(x: List<Bar>): List<Bar> = x.<caret>filter { it is Foo }