Add support for biometrics to Safari

[Hinton]

Objective

Adds support for browser biometrics to Safari. It was previously omitted due to needing some special logic to function correctly and we still used the old app extension.

Biometrics in Safari works slightly differently in that they do not require the desktop companion app to be running. (It's still necessary to enable biometrics inside the desktop app)

Code Changes

• src/background/main.background.ts: Inject platformUtilService to NativeMessagingBackground.
• src/background/nativeMessaging.background.ts: Add support for the slightly different Safari flow.
• src/safari/desktop.xcodeproj/project.pbxproj: Automatic Xcode reformat, figured we might as well commit it since it keeps reformatting the file.
• src/safari/safari/SafariWebExtensionHandler.swift: Native logic required for biometrics and retrieving the keychain secret.
• src/services/browserPlatformUtils.service.ts: Remove Safari exception to supportsBiometrics.

Testing Considerations

We need to test the biometrics on Safari on machines without TouchId (should fail with no support error), on machines with biometrics disabled in desktop app. With biometrics enabled, and lastly logging out of desktop and logging into another account (should fail with wrong user error). We should also do some quick regression testing on other browsers to ensure nothing broke.

[armarti]

works great!