[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/annotations/rendering/conflictingOverloads.fir.kt

@@ -0,0 +1,10 @@
+// !RENDER_DIAGNOSTICS_MESSAGES
+
+@Target(AnnotationTarget.FUNCTION, AnnotationTarget.TYPE, AnnotationTarget.CLASS,  AnnotationTarget.PROPERTY,  AnnotationTarget.VALUE_PARAMETER)
+annotation class An
+
+@An
+data class A(@An val x: @An Int) {
+    @An
+    fun copy(@An x: @An Int) = x
+}