SetupDataPkg/ConfigKnobShimLib: Correct unit test compilation errors.

[apop5]

Description

Unit tests started failing due to compilation errors. This stemmed from a bug fixed in https://github.com/microsoft/mu_basecore/pull/891. Once this bug was fixed, the unit tests starting to be compiled which blocked pipelines.

Checking previous pipelines, these tests were not compiled due to the above mentioned bug.

Once the fix was cherry picked back into basecore 202302, it started blocking the pipelines.

For each item, place an "x" in between [ and ] if true. Example: [x]. (you can also check items in the GitHub UI)

• [ ] Impacts functionality?
  • Functionality - Does the change ultimately impact how firmware functions?
  • Examples: Add a new library, publish a new PPI, update an algorithm, ...
• [ ] Impacts security?
  • Security - Does the change have a direct security impact on an application, flow, or firmware?
  • Examples: Crypto algorithm change, buffer overflow fix, parameter validation improvement, ...
• [ ] Breaking change?
  • Breaking change - Will anyone consuming this change experience a break in build or boot behavior?
  • Examples: Add a new library class, move a module to a different repo, call a function in a new library class in a pre-existing module, ...
• [ ] Includes tests?
  • Tests - Does the change include any explicit test code?
  • Examples: Unit tests, integration tests, robot tests, ...
• [ ] Includes documentation?
  • Documentation - Does the change contain explicit documentation additions outside direct code modifications (and comments)?
  • Examples: Update readme file, add feature readme file, link to documentation on an a separate Web page, ...

How This Was Tested

Ran CI locally and resolved issues.

Integration Instructions

N/A