Adjust preview panel for read-only layers

[tomasMizera]

If you have read-only layer, the "edit" button is hidden and the feature preview looks like this:

Editable feature	Read-only feature

This is fine, but makes it hard for users to realize they can still open the form by clicking anywhere in the panel. We found this out on a workshop on UC.

There is also a possibility that users will completely miss the option to open a form in read-only mode - as this requires you to click anywhere in the preview panel, but the "edit" button.

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Suggestions: Let's add a new primary button "Open form" (text to be confirmed); visual:

https://www.figma.com/design/d78a4ehBBgK6MyxCTuCAqg/Mobile-App?node-id=4074-19617&t=21E8Z32xyqWfRNdD-4

We have two options here:

1. replace the current edit button with the new open form button

• Pros 👍🏻 : the UI will be the same for all features (read-only and editable), the option to edit the form will be in the form toolbar; One could argue that this is how it should work - you first open the form, then hit the "Edit" option.
• Cons 👎🏻 : on the flip side, we add an additional click when someone wants to edit the feature

2. as a new button (only for read-only features)

• Pros 👍🏻 : The existing flow to edit feature will stay the same
• Cons 👎🏻 : Different preview buttons for read-only and editable features

Note: we have a "edit feature" button in the form toolbar in case an editable feature is opened for reading

[tomasMizera]

We agreed that for now we just add a new button "Open form" for read-only features and/or users with read-only permissions