Check for repeated annotations in type alias declaration.

compiler/testData/diagnostics/tests/typealias/typealiasRhsRepeatedAnnotations.kt

@@ -0,0 +1,4 @@
+@Target(AnnotationTarget.TYPE)
+annotation class A
+
+typealias Test1 = @A <!REPEATED_ANNOTATION!>@A<!> Int

compiler/testData/diagnostics/tests/typealias/typealiasRhsRepeatedAnnotations.txt

@@ -0,0 +1,9 @@
+package
+
+@kotlin.annotation.Target(allowedTargets = {AnnotationTarget.TYPE}) public final annotation class A : kotlin.Annotation {
+    public constructor A()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+public typealias Test1 = @A @A kotlin.Int