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

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

@@ -0,0 +1,12 @@
+fun test() {
+    @ann
+    while (2 > 1) {}
+
+    @ann
+    do {} while (2 > 1)
+
+    @ann
+    for (i in 1..2) {}
+}
+
+annotation class ann