chore(automate): function input mocks

[cdriesler]

Description & motivation

• It is not possible to test automation and function edit modals with mocks for a handful of small reasons

Changes:

• Sets current user to function creator in mocks
• Changes function release version selector default value to fall back to provided current release version, if present (previously only used to validate versions it finds in its own request)
• Hard-codes function input schema mock to always surface a handful of useful states

[Mikehrn]

Cannot really judge the code, but works as expected :)