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

compiler/testData/diagnostics/tests/annotations/options/prefix.fir.kt

@@ -0,0 +1,13 @@
+@Target(AnnotationTarget.FUNCTION)
+annotation class FunAnn
+
+@Target(AnnotationTarget.EXPRESSION)
+@Retention(AnnotationRetention.SOURCE)
+annotation class ExprAnn
+
+fun foo(): Int {
+    var x = 5
+    @FunAnn ++x
+    @ExprAnn ++x
+    return x
+}