Change Date filters from BEF jQuery UI Date Picker to Drupal Core Default Styled Date filter field

Problem/Motivation

#3072906: Deprecate and remove jQuery UI datepicker
#3067261: [Plan] Remove jQuery UI components used by Drupal core and replace with a set of supported solutions
#3159222: jQuery UI Touch Punch library

jQuery UI Date Picker was removed from Drupal core
But BEF module still using it ( which looks a big outdated under the Claro admin theme.

Steps to reproduce

Given that an "Editor" was logged in to a Varbase site
When navigating to "/admin/content" or "/admin/content/media"
And clicking on "Created date (from)" or "Created date (to)"
Then the date picker looks outdated

Proposed resolution

Switch date fields in exposed filters from "text" with BEF jQuery UI Date Picker to "date"

Views Date Field Filters now use date element instead of textfield
#2648950: [PP-2] Use form element of type date instead textfield when selecting a date in an exposed filter

Remaining tasks

• ✅ File an issue about this project
• ❌ Addition/Change/Update/Fix to this project
• ❌ Testing to ensure no regression
• ❌ Automated unit/functional testing coverage
• ❌ Developer Documentation support on feature change/addition
• ❌ User Guide Documentation support on feature change/addition
• ❌ Update Release Notes and Update Helper on new feature change/addition
• ❌ Code review from 1 Varbase core team member
• ❌ Full testing and approval
• ❌ Credit contributors
• ❌ Review with the product owner
• ❌ Release

Varbase update type:

• ✅ No Update
• ❌ Optional Update
• ❌ Forced Update
• ❌ Forced Update if Unchanged

User interface changes

After change

API changes

• N/A

Data model changes

• N/A