Feat: Implement clickable notifications

What does this PR do?

This MR adds an option to the client->general->notification settings to make pop-up notifications clickable.
This allows the user to respond more quickly to recent happenings, while being disabled by default to match the current behavior

P.S. I lost my to-do list for this. Let me know if I forgot anything.

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• 6213018e - Add Japanese translation

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mentioned in commit 786677b0