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

compiler/testData/diagnostics/tests/annotations/onInitializer.fir.kt

@@ -0,0 +1,11 @@
+class A {
+    @ann init {}
+    @aaa init {}
+}
+
+interface T {
+    @ann init {}
+    @aaa init {}
+}
+
+annotation class ann