Description of problem:

We noticed crashes of the Backstage backend if a scaffolder action is loaded that is not build for Backstage 1.45

Plugin 'scaffolder' threw an error during startup, waiting for 14 other plugins to finish before shutting down the process.
TypeError: Cannot read properties of undefined (reading 'id')
    at BackendInitializer.cjs.js:262:72

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

TODO !! Will work on a better example ...

Actual results:

Expected results:

Reproducibility (Always/Intermittent/Only Once):

Build Details:

Additional info (Such as Logs, Screenshots, etc):