Fix Show implementation to show inheritance through type-aliases

Show implementation(Ctrl-Hover) now should show classes which inherit such class through type-alias
 #KT-15200 fixed

idea/testData/hierarchy/class/sub/MultiTypeAlias/MultiTypeAlias_verification.xml

@@ -0,0 +1,3 @@
+<node text="A ()" base="true">
+    <node text="B ()"/>
+</node>

idea/testData/hierarchy/class/sub/MultiTypeAlias/main.kt

@@ -0,0 +1,6 @@
+open class A<caret>
+
+typealias TA = A
+typealias TTA = A
+
+class B : TTA()

idea/testData/hierarchy/class/sub/TypeAlias/TypeAlias_verification.xml

@@ -0,0 +1,3 @@
+<node text="A ()" base="true">
+    <node text="B ()"/>
+</node>

idea/testData/hierarchy/class/sub/TypeAlias/main.kt

@@ -0,0 +1,5 @@
+open class A<caret>
+
+typealias TA = A
+
+class B : TA()