codegen: Handle 'secret(..)' functions

[abhinav]

Hello!

• Vote on this issue by adding a 👍 reaction
• If you want to implement this feature, comment to let us know (we'll work with you on design, scheduling, etc.)

Issue details

Follow-up to: https://github.com/pulumi/pulumi-yaml/pull/487#discussion_r1287684356

Specifically, in gen_program.go, genResource has special handling for "secret" separately from generator.function which doesn't recognize the "secret" function.

This code was also previously tracking the arguments to the secret function but not doing anything with that information. This unused slice was dropped in #487.

This issue tracks the follow-up of that.

Affected area/feature

codegen