Add authentication state check when enabling grace period

[amddg44]

Task/Issue URL: https://app.asana.com/0/414709148257752/1205462483244180/f
Tech Design URL:
CC:

Description:
Adds check of authenticator state when determining whether or not to enable the login grace period

Steps to test this PR:

1. Attempt to access the Logins screen but do not authentication to succeed.
2. Cancel the biometric prompt and the Login screen should dismiss.
3. Attempt to access the Logins screen again and confirm you are again prompted to authenticate
4. Minimise the app and again try to access the Logins screen and confirm you are again prompted to authenticate
5. Access the Logins screen and this time allow authentication to succeed. Confirm you can now see the list of logins
6. Back out of the Logins screen and immediately try to access it again. This time you should see the list of logins without an authentication prompt (grace period is active)
7. Back out of the Logins screen again and wait 20 seconds before attempting to access the screen again. This time you should be prompted to authenticate (grace period has expired)

Copy Testing:

• Use of correct apostrophes in new copy, ie ’ rather than '

Orientation Testing:

• Portrait
• Landscape

Device Testing:

• iPhone SE (1st Gen)
• iPhone 8
• iPhone X
• iPhone 14 Pro
• iPad

OS Testing:

• iOS 14
• iOS 15
• iOS 16

Theme Testing:

• Light theme
• Dark theme

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Internal references:

Software Engineering Expectations
Technical Design Template

[bwaresiak]

Great job!