[KMP] Implement ACTUAL_TYPE_ALIAS_TO_NOTHING/TO_NULLABLE_TYPE errors

^KT-60650 Done

compiler/testData/diagnostics/tests/multiplatform/typealias/actualTypealiasToNothing.fir.kt

@@ -0,0 +1,13 @@
+// MODULE: m1-common
+// FILE: common.kt
+
+<!INCOMPATIBLE_MATCHING{JVM}!>expect class E01<!>
+<!INCOMPATIBLE_MATCHING{JVM}!>expect class E02<!>
+
+// MODULE: m1-jvm()()(m1-common)
+// FILE: jvm.kt
+
+typealias MyNothing = Nothing
+
+<!ACTUAL_TYPE_ALIAS_TO_NOTHING!>actual typealias E01 = Nothing<!>
+<!ACTUAL_TYPE_ALIAS_NOT_TO_CLASS!>actual typealias E02 = MyNothing<!>

compiler/testData/diagnostics/tests/multiplatform/typealias/actualTypealiasToNothing.kt

@@ -0,0 +1,13 @@
+// MODULE: m1-common
+// FILE: common.kt
+
+expect class E01
+expect class E02
+
+// MODULE: m1-jvm()()(m1-common)
+// FILE: jvm.kt
+
+typealias MyNothing = Nothing
+
+<!ACTUAL_TYPE_ALIAS_TO_NOTHING!>actual typealias E01 = Nothing<!>
+<!ACTUAL_TYPE_ALIAS_NOT_TO_CLASS!>actual typealias E02 = MyNothing<!>

compiler/testData/diagnostics/tests/multiplatform/typealias/actualTypealiasToNullableType.kt

@@ -0,0 +1,14 @@
+// FIR_IDENTICAL
+// MODULE: m1-common
+// FILE: common.kt
+
+expect class E01
+expect class E02
+
+// MODULE: m1-jvm()()(m1-common)
+// FILE: jvm.kt
+
+typealias MyNullable = String?
+
+<!ACTUAL_TYPE_ALIAS_TO_NULLABLE_TYPE!>actual typealias E01 = String?<!>
+<!ACTUAL_TYPE_ALIAS_NOT_TO_CLASS!>actual typealias E02 = MyNullable<!>