Redundant explict type: do not report for aliased types

#KT-29128 Fixed

idea/src/org/jetbrains/kotlin/idea/inspections/RedundantExplicitTypeInspection.kt

@@ -13,6 +13,7 @@ import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.idea.caches.resolve.resolveToDescriptorIfAny
 import org.jetbrains.kotlin.idea.intentions.RemoveExplicitTypeIntention
 import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.types.AbbreviatedType
 
 class RedundantExplicitTypeInspection : AbstractKotlinInspection() {
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean) =
@@ -22,6 +23,7 @@ class RedundantExplicitTypeInspection : AbstractKotlinInspection() {
             val initializer = property.initializer ?: return
 
             val type = property.resolveToDescriptorIfAny()?.type ?: return
+            if (type is AbbreviatedType) return
             when (initializer) {
                 is KtConstantExpression -> {
                     when (initializer.node.elementType) {

idea/testData/inspectionsLocal/redundantExplicitType/typealias.kt

@@ -0,0 +1,7 @@
+// PROBLEM: none
+
+fun main() {
+    val id: Id<caret> = 11
+}
+
+typealias Id = Int

idea/tests/org/jetbrains/kotlin/idea/inspections/LocalInspectionTestGenerated.java

@@ -4882,6 +4882,11 @@ public class LocalInspectionTestGenerated extends AbstractLocalInspectionTest {
         public void testTop() throws Exception {
             runTest("idea/testData/inspectionsLocal/redundantExplicitType/top.kt");
         }
+
+        @TestMetadata("typealias.kt")
+        public void testTypealias() throws Exception {
+            runTest("idea/testData/inspectionsLocal/redundantExplicitType/typealias.kt");
+        }
     }
 
     @TestMetadata("idea/testData/inspectionsLocal/redundantGetter")