Updated communication, performed value_set xpath code.

[jbradl11]

Pull requests into Health Data Standards require the following. Submitter and reviewer should :white_check_mark: when done. For items that are not-applicable, note it's not-applicable ("N/A") and :white_check_mark:.

The "code" for the new QDM Communication, Performed datatype is nested into a "Reason" attribute. This PR modifies the xpath code to pull the correct code out for Bonnie to use.

Submitter:

• [x] This pull request describes why these changes were made.
• [x] This PR is into the correct branch.
• [x] Internal ticket for this PR: https://jira.mitre.org/browse/BONNIE-1692
• [x] Internal ticket links back to this PR
• [x] Code diff has been done and been reviewed (it does not contain: additional white space, not applicable code changes, debug statements, etc.)
• [x] Tests are included and test edge cases
• [x] Tests have been run locally and pass
• [x] Code coverage has not gone down and all code touched or added is covered.
  • In rare situations, this may not be possible or applicable to a PR. In those situations:
    1. Note why this could not be done or is not applicable here:
    2. Add TODOs in the code noting that it requires a test
    3. Add a JIRA task to add the test and link it here:

Cypress Reviewer:

Name: Dave Czulada

• [x] Code is maintainable and reusable, reuses existing code and infrastructure where appropriate, and accomplishes the task’s purpose
• [x] The tests appropriately test the new code, including edge cases
• [x] You have tried to break the code

Bonnie Reviewer:

Name: @mayerm94

• [x] Code is maintainable and reusable, reuses existing code and infrastructure where appropriate, and accomplishes the task’s purpose
• [x] The tests appropriately test the new code, including edge cases
• [x] You have tried to break the code