Prohibit synchronized methods on interface members

#KT-9310 Fixed

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

@@ -1,13 +1,17 @@
 import kotlin.jvm.Synchronized
 
 interface My {
-    <!SYNCHRONIZED_ON_ABSTRACT!>@Synchronized<!> fun foo()
+    <!SYNCHRONIZED_IN_INTERFACE!>@Synchronized<!> fun foo()
 
-    @Synchronized fun bar() = 1
+    <!SYNCHRONIZED_IN_INTERFACE!>@Synchronized<!> fun bar() = 1
 
-    @Synchronized fun baz(): String {
+    <!SYNCHRONIZED_IN_INTERFACE!>@Synchronized<!> fun baz(): String {
         return "abc"
     }
+
+    var v: String
+        <!SYNCHRONIZED_IN_INTERFACE!>@Synchronized<!> get() = ""
+        <!SYNCHRONIZED_IN_INTERFACE!>@Synchronized<!> set(<!UNUSED_PARAMETER!>value<!>) {}
 }
 
 abstract class Your {
@@ -18,6 +22,10 @@ abstract class Your {
     @Synchronized open fun baz(): String {
         return "xyz"
     }
+
+    var v: String
+        @Synchronized get() = ""
+        @Synchronized set(<!UNUSED_PARAMETER!>value<!>) {}
 }
 
 @Synchronized fun gav() = 1