Report syntax error on unescaped annotation

Also adjust parser testData

compiler/testData/psi/primaryConstructor/recoveryNestedClassAmbiguity.kt

@@ -1,25 +1,30 @@
 class Outer1 {
     class Nested1
 
-    private Ann ()
+    private @Ann ()
 }
 
 class Outer2 {
-    class Nested2 private Ann
+    class Nested2 private @Ann
     fun foo() {}
 }
 
 class Outer3 {
-    class Nested3 private Ann {}
+    class Nested3 private @Ann {}
     fun foo()
 }
 
 class Outer4 {
-    class Nested3 private Ann() {}
+    class Nested3 private @Ann() {}
     fun foo()
 }
 
-class Outer4 {
-    class Nested3 private Ann() : Base()
+class Outer5 {
+    class Nested3 private @Ann() : Base()
     fun foo()
 }
+
+class Outer6 {
+    class Nested1
+    private Ann ()
+}