[FIR] Cast error on the element name instead of the whole body

compiler/testData/diagnostics/tests/exposed/internal.fir.kt

@@ -10,13 +10,13 @@ internal open class Your: My() {
 open class His: Your() {
     protected open class Nested
     // error, public from internal
-    <!EXPOSED_PROPERTY_TYPE!>val x = My()<!>
+    val <!EXPOSED_PROPERTY_TYPE!>x<!> = My()
     // valid, private from internal
     private fun bar() = My()
     // valid, internal from internal
     internal var y: My? = null
     // error, protected from internal
-    <!EXPOSED_FUNCTION_RETURN_TYPE!>protected fun baz() = Your()<!>
+    protected fun <!EXPOSED_FUNCTION_RETURN_TYPE!>baz<!>() = Your()
 }
 
 internal class Their: His() {