auth scheme artifacts are dropped when mode is not 'try'

[nlf]

Support plan

• which support plan is this issue covered by? (e.g. Community, Core, Plus, or Enterprise): Community
• is this issue currently blocking your project? (yes/no): Yes
• is this issue affecting a production system? (yes/no): No

Context

• node version: 12.x
• module version with issue: 18.x
• last module version without issue: n/a
• environment (e.g. node, browser, native): node
• used with (e.g. hapi application, another framework, standalone, ...): hapi-rate-limit
• any other relevant information:

What are you trying to achieve or the steps to reproduce?

We're attempting to use artifacts from a request to pass data to lifecycle hooks in order to facilitate several levels of rate limiting. The issue we're having currently is that the artifacts from an auth scheme are only attached to the request object after an authentication failure when the mode is set to try, while we need the artifacts regardless of the mode.

Relevant code segment appears to be this: https://github.com/hapijs/hapi/blob/master/lib/auth.js#L464-L472

What was the result you got?

Artifacts do not get attached to the request

What result did you expect?

Artifacts to be attached to the request