Bug in shorthand template syntax - does not resolve relative paths properly

[juniper-shopify]

See https://app.graphite.com/github/pr/Shopify/roast/543/Configure-chat-cog-display#comment-PRRC_kwDOOW6Stc6VQcGS

[juniper-shopify]

Probably we'll need to switch template from being a simple method declared on CogInputContext to being a dynamically bound method defined in CogInputManager, like the cog-specifig methods, and from, etc.