Markup escaping fixes

[darrenburns]

Type of changes

• Bug fix
• New feature
• Documentation / docstrings
• Tests
• Other

Checklist

• I've run the latest black with default args on new code.
• I've updated CHANGELOG.md and CONTRIBUTORS.md where appropriate.
• I've added tests for new code.
• I accept that @willmcgugan may be pedantic in the code review.

Description

Changes the definition of the Rich markup tags such that they cannot contain a [ inside them, and handles escaping of [ that previously was considered to be a tag, but is now considered part of plain text.

• Closes [BUG] List of numpy arrays does not print correctly #1876 - see image below
• Closes console markup escaping issue #1944 - I added a regression test for this, see the diff

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.81%. Comparing base (e839bfb) to head (fa927d9).
Report is 1751 commits behind head on master.

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1950      +/-   ##
==========================================
- Coverage   99.82%   99.81%   -0.02%     
==========================================
  Files          71       71              
  Lines        6943     7034      +91     
==========================================
+ Hits         6931     7021      +90     
- Misses         12       13       +1     

Flag	Coverage Δ
unittests	99.81% <100.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[willmcgugan]

👍