feat: All analyser unit test code updated to compile without errors. #179768

[charliebenjamin-audacia]

Also includes:

• feat: Updated the base editorconfig to add missing roslyn security analyzers. #179296

Action	Done?
CHANGELOG updated	✔
Code compiles and unit tests all pass locally	✔
Debug/console log code removed	✔
Commented out code removed	✔
Unit tests added/updated	✔
README updated	✔
Considered: - Performance - Security - Logging	✔
Licenses of any new/upgraded dependencies checked, with no copyleft dependencies introduced	✔