feat!: offline detection and navigation catches

[Kinukeo]

Description

Introduced a warning card when the user tries to save when they are offline in order to inform them to retry saving or continue without saving.
This relates to #706 and will help users to avoid losing progress.

Checklist:

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• I have read the gliff.ai Contribution Guide.
• I have requested to pull a branch and not from main.
• I have checked all commit message styles match the requested structure.
• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• My changes generate no new warnings.

To Do:

• Modify Snackbar to create ErrorSnackbar in Style
• Replace the AdvancedDialog with ErrorSnackbar
• Create snackbar to show the save status as can be seen in issue Improve Saving Process via Autosave #706