Report warning on @Synchronized on inline methods

Until KT-27310 is supported, we warn users that this has no effect.

 #KT-29884 Fixed

compiler/testData/diagnostics/testsWithStdLib/inline/synchronizedOnInline.kt

@@ -0,0 +1,16 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+<!SYNCHRONIZED_ON_INLINE!>@Synchronized<!>
+inline fun foo(f: () -> Unit): Unit = f()
+
+var bar: String
+    <!SYNCHRONIZED_ON_INLINE!>@Synchronized<!>
+    inline get() = ""
+    <!SYNCHRONIZED_ON_INLINE!>@Synchronized<!>
+    inline set(value) {}
+
+inline var baz: String
+    <!SYNCHRONIZED_ON_INLINE!>@Synchronized<!>
+    get() = ""
+    <!SYNCHRONIZED_ON_INLINE!>@Synchronized<!>
+    set(value) {}