Focus issue when creating a new annotation

[christian-oreilly]

A code regression caused an "Invalid localizer" error showing 3 times when a user want to create a new annotation. This is likely a problem of focus causing and early call to the function used to localize the string of annotated text in the PDF.

[pafonta]

It is not fixable without the architecture redesign... There are too much entry points with different objectives to the same part of code.

For example, it is not possible to not execute, when creating a new annotation, the part of code (see below) responsible for the described behaviour because the 'Save' button is relying on it (verification). Making the saving logic aware of the state ('creating a new annotation') might introduce more problems than fixing this issue this way.

https://github.com/BlueBrain/neurocurator/blob/00e349bb751ceddae6604eb7706bb26e3cb7c26a/neurocurator/annotWidgets.py#L831