[ADD] website_hr_recruitment_ux: phone min-length validation on job application form

[mav-adhoc]

Summary

Adds the website_hr_recruitment_ux module to fix a bug in the public job application form where the phone field could be submitted containing only a country prefix (e.g. +54), causing two cascading issues:

1. False "already applied" warning — check_recent_application uses exact equality on the raw partner_phone value, so every applicant who submitted +54 matches every other, triggering the duplicate-application message incorrectly.
2. Inflated application_count — _compute_partner_phone_sanitized falls back to the raw value when _phone_format cannot parse a bare prefix, causing _compute_application_count to group unrelated applicants together.

Changes

• Template override (views/website_hr_recruitment_templates.xml): inherits website_hr_recruitment.apply and adds minlength="7" to the partner_phone input. The browser blocks form submission when only the auto-filled country prefix is present.
• JS patch (static/src/interactions/hr_recruitment_form.js): patches HrRecruitmentForm.checkRedundant to skip the RPC call when the phone value is shorter than 7 characters, preventing the false "already applied" toast from firing on focusout.

The module depends on hr_recruitment_ux + website_hr_recruitment and uses auto_install: True so it activates automatically whenever both are present.

Test plan

1. Navigate to a public job offer page on the website.
2. Fill in Name and Email, leave the Phone field with only the auto-filled country prefix (e.g. +54).
3. Tab out of the Phone field — verify no "already applied" warning appears.
4. Click the Apply button — verify the browser shows a native validation error on the Phone field and the form is not submitted.
5. Enter a complete phone number (e.g. +54 9 11 1234-5678) and submit — verify the application goes through normally.

[roboadhoc]

[les-adhoc]

@roboadhoc r+ nobump

[roboadhoc]

@mav-adhoc @les-adhoc because this PR has multiple commits, I need to know how to merge it:

• merge to merge directly, using the PR as merge commit message
• rebase-merge to rebase and merge, using the PR as merge commit message
• rebase-ff to rebase and fast-forward

[les-adhoc]

@roboadhoc rebase-ff

[roboadhoc]

Merge method set to rebase and fast-forward.