Fix so that no expertise code in PLR record doesn't cause error

[neophyte57]

The easiest way to get some data into PlrProvider table is to run the console app in moh-prime\utilities\PlrIntakeUtility: dotnet run .\PRIME_Test_Data_PLR_IAT20210617_v2.0.xls intake.log

The PLR information panel should appear on the Enrollee Overview page if an Enrollee's Certification.LicenseNumber matches a PlrProvider.CollegeId.

Some test scenarios:

Scenario	Expected
Enrollee does not match existing PLR record	Overview of Enrollee displays properly, albeit without PLR panel
Enrollee matches PLR record that has no Expertises	Overview of Enrollee displays OK, PLR panel displays "N/A" or equivalent for Expertise
Enrollee matches PLR record that has Expertises	Expertises translated to human-readable text
Non-CPSID Licence Number, e.g. for Registered Midwife that matches PLR record	Overview of Enrollee displays OK, PLR panel displays with PLR details
MOA Enrollee	Overview of Enrollee displays properly, albeit without PLR panel
Enrollee has multiple certifications, some of which match a PLR record	Overview of Enrollee displays with multiple PLR panels