Generate component id when there is no valid keypath

[barnson]

• Describe the scenario and benefits that the feature supports.

WiX v4 defaults the component id to the id of the keypath. (This is consistent with v3 behavior but a bit odd given that File/@Id no longer defaults to the source name.) But when a component doesn't follow the rules for a generated guid, there is also no default id and error occurs. An id should be generated like every other id.

• Describe how you're accomplishing the feature today (if possible).

Manual ids.

• Describe what you'd like the new feature to do.

Generate ids...and consider whether WiX v6 should kill off the "default component id is keypath id" behavior and always generate one by default.