Bake resolves with rez<3.2.0 can't be loaded due to missing testing key

[samson-jerome]

Baked resolves generated with older versions are not compatible with rez-3.2.0.
Note a regression per say but a breaking change

Environment

• windows 10
• 3.2.0
• Python 3.11.4

To Reproduce

1. using rez-3.0.0, bake a simple resolve into a rxt file

> rez --version
Rez 3.0.0 from c:\rez\3.0.0\Lib\site-packages\rez (python 3.11)
> rez env python --output py.rxt

2. using rez-3.2.0, resolve a context from the above rxt file

> rez env --input py.rxt
12:10:10 ERROR    ResolvedContextError: Failed to load context from py.rxt: KeyError: 'testing'

Expected behavior
We should be left in a resolved context

Actual behavior
Resolution failure.

Related Issues/PRs

• Introducing "testing" object #1740

[JeanChristopheMorinPerso]

Thanks for opening this. It's definitely a bug.

[JeanChristopheMorinPerso]

A fixed has been released in rez 3.2.1. Thanks again for reporting the problem.