[ux] Update sample accessioning message

[StephenHulme]

Addresses misleading wording raised in https://sanger.freshservice.com/a/tickets/58471?current_tab=details

Changes proposed in this pull request

• Improve reability of Study Specifications page (note gaps between fields)
• Modernise specifications page
• Add study accessioning checklist to specifications page
• Change message on unassionable samples:
  • from Study 'UAT Study' is missing an accession number
  • to Study 'UAT Study' is not accessionable - <view accessioning checklist>

Developer notes

• The studies information page is overcrowded and it isn't possible to link to a specific tab, in this case the Studies Accessioning checklist.
• The studies information page is more for samples anyway... so I've added the checklist to the Study Detail/Specification/Properties page, where it can be linked too.
• But adding it to the study specification page looked weird, since the page was so dated - so I fixed that too 😅

Screenshots

Before:

After:

Instructions for Reviewers

[All PRs] - Confirm PR template filled
[Feature Branches] - Review code
[Production Merges to main]
    - Check story numbers included
    - Check for debug code
    - Check version

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.21%. Comparing base (b37ffd9) to head (9b1b1d8).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5633      +/-   ##
===========================================
- Coverage    87.23%   87.21%   -0.03%     
===========================================
  Files         1461     1461              
  Lines        33012    33014       +2     
  Branches      3472     3472              
===========================================
- Hits         28798    28792       -6     
- Misses        4193     4201       +8     
  Partials        21       21              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.