Desktop: Resolves #8493: Link to FAQ when encryption password may have been reset by an update

[personalizedrefrigerator]

Summary

This pull request adds a link to the relevant section of the FAQ when the user is on an ARM64 Mac with a missing master key password.

Resolves #8493.

Testing

1. Modify MissingPasswordHelpLink.tsx such that the help link displays on the current system (e.g. comment out process.arch === 'arm64' if on an x86_64 Mac).
2. Launch Joplin and clear the encryption password.
3. Click on the help link.

Screenshot

Notes

There may be a better solution -- the link is currently shown on any MacOS/ARM64 system with an empty encryption password. Additionally, it adds to an already large amount of text. An alternative might be to

1. make the link appear on all systems and link to the encryption setup documentation, and,
2. link the encryption setup documentation to the relevant portion of the FAQ.

[laurent22]

There may be a better solution -- the link is currently shown on any MacOS/ARM64 system with an empty encryption password. Additionally, it adds to an already large amount of text. An alternative might be to

How about making it time limited - you display the message for two months from the release date (till 1 Nov), then you display the default?