chore: fix jest-watch-select-projects

[nickmccurdy]

What: fixes jest-watch-select-projects so you can type P in npm test to filter tests in a specific project

Why: jest-watch-select-projects was added to the wrong section of the config, causing it to not be enabled

How: moved the package from projects to watch plugins

Checklist:

• Documentation N/A
• Tests N/A
• Updated Type Definitions N/A
• Ready to be merged
  

[codecov]

Codecov Report

Merging #309 (42975ac) into master (0309dcf) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #309   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           23        23           
  Lines          315       315           
  Branches        72        72           
=========================================
  Hits           315       315           

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[github-actions]

🎉 This PR is included in version 5.11.7 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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