[1842] Update end-of-cycle banner content and conditions for rendering

[elceebee]

Context

The End-of-cycle gets underway on the 1 July. The first thing is that candidates with unsuccessful applications will see this banner on their application dashboard and candidate details page.

Changes proposed in this pull request

We are very soon going to do away with the apply_1 and apply_2 distinctions. But because of the time sensitivity with this ticket, we have had to work within the existing structure, using the apply_2 deadline as the apply_deadline.

I have deleted all the 'phase' related queries as phase is now irrelevant.

Before	After

Guidance to review

The preview is at /view_components/candidate_interface/summer_recruitment_banner_component/twenty_twenty_four

locally

Link to Trello card

https://trello.com/c/OHHgoRn8

Things to check

• If the code removes any existing feature flags, a data migration has also been added to delete the entry from the database
• This code does not rely on migrations in the same Pull Request
• If this code includes a migration adding or changing columns, it also backfills existing records for consistency
• If this code adds a column to the DB, decide whether it needs to be in analytics yml file or analytics blocklist
• API release notes have been updated if necessary
• If it adds a significant user-facing change, is it documented in the CHANGELOG?
• Required environment variables have been updated added to the Azure KeyVault

[elceebee]

Update Summer Recruitment Banner Text

[github-actions]

You have one or more flakey tests on this branch! ❄️ ❄️ ❄️

Failed 1 out of 3 times at ./spec/system/candidate_interface/offers_and_withdrawals/candidate_accepts_offer_spec.rb:7: ⚠️ Ambiguous match, found 2 elements matching visible link or button "Lind College"