allow changing left panel to any type

[RyanCoulsonCA]

Related Item(s)

#252, ramp4-pcar4/story-ramp#416

Changes

• Removes the condition on the type selector to allow changing the type of the left panel.

Notes

As with the other PRs that require changes in the main Storylines repo, previewing this feature will not work until the NPM package is updated.

Testing

Steps:

1. Try changing the type of the left panel and ensure everything is saving correctly in the config.
2. Click preview and ensure that the panels are appearing in the correct order.

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This change is 

[github-actions]

Your demo site is ready! 🚀 Visit it here: https://ramp4-pcar4.github.io/storylines-editor/fix-252/#/en/editor

[mohsin-r]

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @RyanCoulsonCA)

[szczz]

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @RyanCoulsonCA)

[KashishMistry]

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @RyanCoulsonCA)

[yileifeng]

Reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @RyanCoulsonCA)