[auth] Bugfix/auth icons with period

[Choromanski]

Description

Previously it would check if the substring that precedes the first . or ( of the lowercase spaceless provider title was a valid icon.

Now:

1. Checks if lowercase spaceless provider title is valid icon
2. If the title contains a ( it checks if the preceding part of the title is a valid icon
3. If the title contains a . it checks if the preceding part of the title is a valid icon

Provider Title	Previous Check	Now Checks
Login.gov	login ❌	login.gov ✅
GOV.UK (Brian)	gov ❌	gov.uk(brian)❌ then gov.uk ✅
PayPal.com (Visa)	paypal ✅	paypal.com(visa) ❌ then paypal.com ❌ then paypal ✅
Amazon.com	amazon ✅	amazon.com ❌ then amazon ✅

This PR resolves issue #3473