Enhancement: Give OcModal the option to use OcContextualHelper

[lookacat]

Description

See https://github.com/owncloud/web/issues/6892#issuecomment-1245438400

Related Issue

https://github.com/owncloud/web/issues/6892

Motivation and Context

Why new props instead of using slot: So we can use it via code without markup

Screenshots (if appropriate):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Technical debt
• [ ] Tests

Checklist:

• [x] Code changes
• [x] Unit tests updated
• [ ] Acceptance tests added
• [x] Documentation added/updated

[sonarcloud[bot]]

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0.0% Duplication

[AlexAndBear]

I am not quite sure if we should do this. It would be better to use a slot for the message and implement the contextualHelper there.

[lookacat]

The slot method is not suitable because we create the modal via code, we have no option there to dynamically provide a template

[AlexAndBear]

As far as I know it will be rendered in the code via vue template anyways.So it should be quite possible to pass a new variable for the ct helper in web.

It's just not a good approach at the end to add a lot of components we have to the modal it self.

[AlexAndBear]

Rechecked, the slot won't be used in the app.vue, so I agree that's the easiest solution here.