[AlexAndBear]

Description

Uploading into a folder that was deleted elsewhere no longer throws an uncaught error on every attempt and retry; the upload panel still shows the failure, and a folder whose files all failed still shows up in the list.

Related Issue

• Fixes Failed upload into a deleted folder throws an uncaught error #4318

How Has This Been Tested?

• test environment: unit tests (Vitest), browser tests (Playwright) against a local OpenCloud
• test case 1: unit: a failed upload into a deleted folder resolves without throwing, the existing all-files-failed refresh still works
• test case 2: browser: upload and retry into a deleted folder (desktop and Pixel 7, no page error), all files of a folder upload failing, normal file and folder uploads in the personal space and a project space incl. quota refresh

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)