[NI] Fix loosing type annotations on extension functions

#KT-32138 fixed

idea/testData/checker/kt32189returnTypeWithTypealiasSubtitution.kt

@@ -0,0 +1,19 @@
+class B {
+    class Builder
+}
+
+typealias ApplyRestrictions = B.Builder.() -> B.Builder
+
+fun applyRestrictions1(): ApplyRestrictions = { this }
+fun applyRestrictions2() = applyRestrictions1()
+fun <K> applyRestrictions3(<warning descr="[UNUSED_PARAMETER] Parameter 'e' is never used">e</warning>: K) = applyRestrictions1()
+
+fun buildB() {
+    val a1 = applyRestrictions1()
+    val a2 = applyRestrictions2()
+    val a3 = applyRestrictions3("foo")
+
+    B.Builder().a1()
+    B.Builder().a2()
+    B.Builder().a3()
+}