Add detailed unit test for Verification.verifyMobile()

[serdiukov-o-nordwhale]

We had an issue with incorrect expiration check (which have appeared after refactoring during new Zoom integration)

For prevent similar situations in the future we should test all cases:

• empty code was passed
• code doesnt matches
• code was expired

await expect(verifyMobile(<test user>, { otp: <test OTP> })).rejects.toThrow('No code to validate, retry')
// other cases