MVP-429: Fix normalize user first-last names

[BradyMitch]

🎯 Summary

MVP-429

• Fixes issue with normalize user first and last name for BCeID - When a user's display name has more than one space the name is not split correctly.

🔰 Checklist

• I have read and agree with the following checklist and am following the guidelines in our Code of Conduct document.

• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation where required.
• I have tested my changes to the best of my ability.
• I have consulted with the team if introducing a new dependency.
• My changes generate no new warnings.

[TaylorFries]

changes to documentation look good and updates to username seem to work as expected.