Forms: add date validation in all browsers

[enejb]

Fixes #7888
This Pr adds simple date validation and test the date formats that the date input supports.

Proposed changes:

• Removed jquery date picker for date validation.
• Adds a simpler date validation function.
• Adds tests for the different supported date formats.

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• Have you written new tests for your changes, if applicable?
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Testing instructions:

• Load this Pr.
• Add the date picker in different date format options.
• Test that the validation works as expected. Enter a invalid date. Try to submit the form notice that you are not able to.
• run the tests by going to the cd projects/packages/forms and running the command pnpm test

[github-actions]

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[github-actions]

Code Coverage Summary

Coverage changed in 1 file.

File	Coverage	Δ%	Δ Uncovered
projects/packages/forms/src/contact-form/js/accessible-form.js	240/373 (64.34%)	0.34%	-2 💚

1 file is newly checked for coverage.

File	Coverage
projects/packages/forms/src/contact-form/js/validate-helper.js	15/15 (100.00%) 💚

Full summary · PHP report · JS report

[enejb]

@jeherve Can you help me understand the issue #7888 better.

Currently we don't allow for any other date input fields other then the ones that this PR covers. I think having the date limit in terms of max year (275760) makes sense to me. Do we want to cover anything else?