Forms: Update date picker input to use a accessible standalone date picker

[enejb]

⚠️ - This Pr Needs more testing.

Fixes #41081

Proposed changes:

• This Pr does 2 things.
• 1. Adds a new date picker library that is based on the work https://chrisdavies.github.io/tiny-date-picker/
• 2. the library was updated to be more accessible and remove any not used features.
• Removes the current use of the jQuery datepicker usage.

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

Does this pull request change what data or activity we track or use?

Testing instructions:

• Load this PR.
• Add a form with 3 date pickers. Each should have a different date format.
• Load the PR in the front-end and play around with the date pickers.
• You should be able to select the dates and submit the form as expected.
• You should be able to use the keyboard to select a date.
• You should be able to Use VoiceOver on a mac to select a date with your eyes closed.

[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WordPress.com Simple site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin, and enable the update/date-picker-input-try-2 branch.

  • For jetpack-mu-wpcom changes, also add define( 'JETPACK_MU_WPCOM_LOAD_VIA_BETA_PLUGIN', true ); to your wp-config.php file.

• To test on Simple, run the following command on your sandbox:

  bin/jetpack-downloader test jetpack update/date-picker-input-try-2
  

  bin/jetpack-downloader test jetpack-mu-wpcom-plugin update/date-picker-input-try-2
  

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[github-actions]

Thank you for your PR!

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• ✅ Add changelog entries to affected projects
  

This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖

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Follow this PR Review Process:

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[github-actions]

Code Coverage Summary

Coverage changed in 2 files.

File	Coverage	Δ%	Δ Uncovered
projects/packages/forms/src/contact-form/js/accessible-form.js	241/387 (62.27%)	-1.73%	11 💔
projects/packages/forms/src/contact-form/class-contact-form-field.php	382/538 (71.00%)	2.39%	0 💚

14 files are newly checked for coverage. Only the first 5 are listed here.

File	Coverage
projects/packages/forms/src/contact-form/js/date-picker.js	0/3 (0.00%) 💔
projects/packages/forms/src/contact-form/libs/date-picker/date-picker-options.ts	0/45 (0.00%) 💔
projects/packages/forms/src/contact-form/libs/date-picker/date-picker.ts	0/7 (0.00%) 💔
projects/packages/forms/src/contact-form/libs/date-picker/lib/date.ts	0/34 (0.00%) 💔
projects/packages/forms/src/contact-form/libs/date-picker/lib/dom.ts	0/4 (0.00%) 💔

Full summary · PHP report · JS report