Viewport: Fix the defaultOrientation config option

[jpzwarte]

So #21048 was actually broken. This fixes that (tested this time!).

[ndelangen]

@shilman I think this is actually a good bugfix to merge into 7.0. WDYT?

[ndelangen]

@jpzwarte did you intend to delete the branch (which auto-closes PRs)?

[jpzwarte]

NO :(

[jpzwarte]

I removed my local fork, which caused this PR to be closed :( Was not my intention.

[valentinpalkovic]

@ndelangen Can we merge this one?

[ndelangen]

I can't update this @jpzwarte

(next) % git remote add jpzwarte git@github.com:jpzwarte/storybook.git                                                                                                                                                                                                 ~/Projects/Storybook/core
git fetch jpzwarte fix/viewport-orientation
git switch --track jpzwarte/fix/viewport-orientation
ERROR: Repository not found.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
fatal: invalid reference: jpzwarte/fix/viewport-orientation

[jpzwarte]

@ndelangen see the new PR: #21962