[AlexAndBear]

Description

New app tokens now expire at 11:59 PM of the picked day, as the success dialog says, instead of just after midnight of the next day.

Related Issue

• Fixes App token list shows an expiry date one day after the picked date #4183

How Has This Been Tested?

• test environment: unit tests (Vitest), browser tests (Playwright) against a local OpenCloud
• test case 1: unit: the sent expiry is whole seconds and, added a few seconds later on the server side, lands at 23:59 of the picked day
• test case 2: browser: tokens for three dates (incl. the DST change day) show the picked day 11:59 PM in the dialog and the list (Europe/Berlin), Pixel 7 dialog checked

Types of changes

• Bugfix
• Enhancement (a change that doesn't break existing code or deployments)
• Breaking change (a modification that affects current functionality)
• Technical debt (addressing code that needs refactoring or improvements)
• Tests (adding or improving tests)
• Documentation (updates or additions to documentation)
• Maintenance (like dependency updates or tooling adjustments)