fix(updater): do not run in dialog mode on .deb, closes #4573

[lucasfernog]

What kind of change does this PR introduce?

• Bugfix
• Feature
• Docs
• New Binding issue #___
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change?

• Yes, and the changes were approved in issue #___
• No

Checklist

• When resolving issues, they are referenced in the PR's title (e.g fix: remove a typo, closes #___, #___)
• A change file is added if any packages will require a version bump due to this PR per the instructions in the readme.
• I have added a convincing reason for adding this feature, if necessary

Other information

[betamos]

Didn't know you went ahead with this, so did some duplicate work, see betamos@0569eb7

Anyway, I also added a dev mode check to error out if installation is attempted, which we might wanna have to prevent touching files. I can remove the appimage check and send a PR for that part only, perhaps?

[lucasfernog]

@betamos I think disabling it on dev makes it harder to develop a custom updater flow, even though the installation will likely fail. We could document it instead.