fix: Adds expected text for toContainHTML checks that fail (#299)

[kiranjd]

What:
No expected message when tests fail when toContainHTML matcher is used

Why:
Fixes #299

How:
Added an expected block with htmlText as the expected string with 'Expected' colour using utils.EXPECTED_COLOR

Checklist:

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

[codecov]

Codecov Report

Merging #318 (b671eff) into master (4179117) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #318   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           23        23           
  Lines          534       534           
  Branches       197       197           
=========================================
  Hits           534       534           

Impacted Files	Coverage Δ
src/to-contain-html.js	100.00% <ø> (ø)

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[nickserv]

Can you add a regression test for this please?

[kiranjd]

@nickmccurdy Definitely. Can you point me where I can find a similar test added? Do not know what a regression test is.

EDIT: Figured out what you mean. Although I'm having trouble asserting the return value of a matcher. I think this is not possible on to-contain-html.js tests

[kiranjd]

@nickmccurdy added the regression tests

[github-actions]

🎉 This PR is included in version 5.11.8 🎉

The release is available on:

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

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