[AlexAndBear]

Description

• Preferences opened from a public link: the link carries the public link token again, so a reload restores the link context instead of spinning forever.
• Logged-in users: the link is unchanged (empty query), so Search bar disappears when entering account preferences #2120 stays fixed.

Related Issue

• Fixes Reloading Preferences opened from a public link shows an endless spinner #3771

How Has This Been Tested?

• test environment: unit tests (Vitest), browser tests (Playwright) against a local OpenCloud
• test case 1: unit: the token is passed without a user, logged-in users get an empty query
• test case 2: browser: password-protected public link, Preferences, reload; logged-in Preferences and search bar unchanged

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)