[staging] CORS error for languageexample.php

[darcywong00]

Found while testing k8s deployment of staging sites

When I load https://web.keyman-staging.com/#tda-latn,Keyboard_sil_tagdal

The console network tab shows the error:

https://keymanweb.com/prog/languageexample.php?keyboard=Keyboard_sil_tagdal&language=tda-latn

Callstack: (anonymous) @ https://web.keyman-staging.com/cdn/deploy/js/sentry.bundle.5.28.0.min.94ac314aeac15a10211c943fbbb0b85b.js:2 (anonymous) @ https://web.keyman-staging.com/cdn/deploy/js/sentry.bundle.5.28.0.min.94ac314aeac15a10211c943fbbb0b85b.js:2 updateExample @ https://web.keyman-staging.com/cdn/deploy/js/kmwlive.c61fd36e72bb63277fbc4e71d88eb8bd.js:529 changeKeyboard @ https://web.keyman-staging.com/cdn/deploy/js/kmwlive.c61fd36e72bb63277fbc4e71d88eb8bd.js:424 (anonymous) @ https://web.keyman-staging.com/cdn/deploy/js/kmwlive.c61fd36e72bb63277fbc4e71d88eb8bd.js:263 e.callEvent @ https://s.keyman.com/kmw/engine/16.0.145/keymanweb.js:481 c.doKeyboardChange @ https://s.keyman.com/kmw/engine/16.0.145/keymanweb.js:541 (anonymous) @ https://s.keyman.com/kmw/engine/16.0.145/keymanweb.js:511 c.setActiveKeyboard @ https://s.keyman.com/kmw/engine/16.0.145/keymanweb.js:511 e.setActiveKeyboard @ https://s.keyman.com/kmw/engine/16.0.145/keymanweb.js:796 (anonymous) @ https://web.keyman-staging.com/:168 (anonymous) @ https://web.keyman-staging.com/:161