v3 - Add x-cloak attribute where it is missing

[lrljoe]

This PR adds x-cloak where it is missing and x-show is in use.

No new tests required.

All Submissions:

• [X] Have you followed the guidelines in our Contributing document?
• [X] Have you checked to ensure there aren't other open Pull Requests for the same update/change?

New Feature Submissions:

1. [X] Does your submission pass tests and did you add any new tests needed for your feature?
2. [X] Did you update all templates (if applicable)?
3. [X] Did you add the relevant documentation (if applicable)?
4. [X] Did you test locally to make sure your feature works as intended?

Changes to Core Features:

• [X] Have you added an explanation of what your changes do and why you'd like us to include them?
• [X] Have you written new tests for your core changes, as applicable?
• [X] Have you successfully ran tests with your changes locally?

[codecov[bot]]

Codecov Report

Merging #1463 (0b125c5) into v3-develop (3bd9e4a) will not change coverage. The diff coverage is n/a.

@@              Coverage Diff              @@
##             v3-develop    #1463   +/-   ##
=============================================
  Coverage         88.11%   88.11%           
  Complexity         1222     1222           
=============================================
  Files                85       85           
  Lines              2971     2971           
=============================================
  Hits               2618     2618           
  Misses              353      353