[AlexAndBear]

Description

• Same names in one batch: moving or copying same-named items from different folders in one go now asks like any other conflict (Keep both or Skip) instead of silently keeping only one of them.
• Closing the conflict dialog: closing it (close button or Escape) now cancels the whole move, copy, upload or restore, nothing is transferred. Skip stays its own button. The move/copy/restore dialog now shows the close button too, so it can be cancelled on touch devices.

Related Issue

• Fixes Moving same-named files from different folders in one batch silently loses all but one #4352
• Fixes Closing the "File already exists" dialog doesn't cancel the move or copy #4354

How Has This Been Tested?

• test environment: unit tests (Vitest), browser tests (Playwright) against a local OpenCloud
• test case 1: unit: in-batch clashes for move and copy (files, folders, 3+ items, existing "(1)" names, items already in the target, every answer combination incl. apply to all, unique target paths), cancel at the first and later dialogs for move/copy/paste/drop/upload/restore
• test case 2: browser: reproduced both bugs on main, then on the fix: Move to / Copy to / paste from Favorites and search with same-named files and folders, combined with existing conflicts, close button and Escape cancel for move/copy/paste/drag and drop/upload/restore, regression checks (cross-space, same-folder copy, move into itself), Pixel 7 (English and German)

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)