Psi2Ir: Mark accessors with no bodies as default accessors.

They are currently marked as defined even when they get a
default implementation. That makes it hard to figure out
if the accessor should be removed when introducing a backing
field in the JVM_IR backend.

compiler/testData/diagnostics/testsWithStdLib/annotations/annotationsTargetingLateinitAccessors.kt

@@ -0,0 +1,14 @@
+// Please make sure that this test is consistent with the blackbox test "annotationsOnLateinitAccessors.kt"
+
+import kotlin.reflect.KProperty
+
+annotation class Ann
+annotation class AnnRepeat
+
+class LateinitProperties {
+    @get:Ann
+    lateinit var y0: String
+
+    <!ANNOTATION_TARGETS_NON_EXISTENT_ACCESSOR!>@get:Ann<!>
+    private lateinit var y1: String
+}

compiler/testData/diagnostics/testsWithStdLib/annotations/annotationsTargetingLateinitAccessors.txt

@@ -0,0 +1,24 @@
+package
+
+public final annotation class Ann : kotlin.Annotation {
+    public constructor Ann()
+    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 final annotation class AnnRepeat : kotlin.Annotation {
+    public constructor AnnRepeat()
+    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 final class LateinitProperties {
+    public constructor LateinitProperties()
+    @get:Ann public final lateinit var y0: kotlin.String
+    @get:Ann private final lateinit var y1: kotlin.String
+    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
+}

compiler/testData/diagnostics/testsWithStdLib/annotations/annotationsTargetingNonExistentAccessor.kt

@@ -62,12 +62,6 @@ class PrivateToThis<in I> {
 }
 
 class Statics {
-    @get:Ann
-    lateinit var y0: String
-
-    <!ANNOTATION_TARGETS_NON_EXISTENT_ACCESSOR!>@get:Ann<!>
-    private lateinit var y1: String
-
     companion object {
         @JvmField
         <!ANNOTATION_TARGETS_NON_EXISTENT_ACCESSOR!>@get:Ann<!>

compiler/testData/diagnostics/testsWithStdLib/annotations/annotationsTargetingNonExistentAccessor.txt

@@ -86,8 +86,6 @@ public final class PrivateToThis</*0*/ in I> {
 
 public final class Statics {
     public constructor Statics()
-    @get:Ann public final lateinit var y0: kotlin.String
-    @get:Ann private final lateinit var y1: kotlin.String
     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