Let "<select />" EditEngine fields canonicalize saved defaults
Summary:
Ref T12124. After D18134 we accept either "25" or "low" via HTTP parameters and when the field renders as a control, but if the form has a default value for the field but locks or hides it we don't actually run through that logic.
Canonicalize both when rendering the control and when using a raw saved default value.
Test Plan:
- Created a form with "Priority: Low".
- Hid the "Priority" field.
- Before patch: Tried to create a task, was rebuffed with a (now verbose and helpful, after D18135) error.
- Applied patch: things worked.
Reviewers: chad, amckinley
Reviewed By: amckinley
Maniphest Tasks: T12124
Differential Revision: https://secure.phabricator.com/D18142