Add catch to stop unsaved annotations not saving

[joshuajames-smith]

Is your feature request related to a problem? Please describe

From a UX perspective, users are used to sometimes just closing the page and expecting work to save.
At the moment, we have no catch (hard or internal navigation) that prevents the navigation until user has indicted whether they want their annotation saved. Similarly, marking annotation as complete feels like it should save!

Describe the solution you'd like

A catch which knows there is unsaved annotations and opens a dialogue to ensure the user gets a chance to save their annotations before losing them.
(hard nav = refresh, back | soft nav = internal nav = return to curate)

The mark annotations as complete should also be a save function.

Describe alternatives you've considered

N/A

Additional context

N/A

[ChasNelson1990]

I thought we dealt with this? Or parts of it at least?

[joshuajames-smith]

I thought we dealt with this? Or parts of it at least?

I think we did talk about it. This issue is still present with me playing about on staging just now!

[joshuajames-smith]

• Mark Annotation as Complete > Saves Annotation Automatically > Present Snackbar [relates to Inform the user when saving is completed annotate#502]

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• Hard Navigation, i.e. Refresh or Back > Unsaved Annotation Catch > Present Dialogue [below]
• Soft Navigation, i.e. Open "Active-Project" in CURATE > Unsaved Annotation Catch > Present Dialogue [below]

Dialogue should appear by catching unsaved annotations during user soft or hard navigation. The dialogue feedbacks to the user that they have unsaved annotations, preventing loss of work if unintentional.

If user clicks Save Annotations [purple button], this should save before allowing user soft or hard navigation to proceed.
If user clicks the Don't Save [empty button], this should ignore Savin and allow user soft or hard navigation to proceed.
If user clicks the Cancel [cross icon], this should then cancel user soft or hard navigation and remain on annotate.