[AlexAndBear]

Description

• Failed search: shows an error message instead of just "No results found".
• Resubmit: pressing Enter or the search icon always runs the search again, also with the same term, so you can retry or get the current state.

Related Issue

• Fixes A failed search shows "No results found" and the same term can't be searched again #4361

How Has This Been Tested?

• test environment: unit tests (Vitest), browser tests (Playwright) against a local OpenCloud
• test case 1: unit: error message on a failed search, silent for cancelled, replaced and left searches, preview error without a "No results" announcement, resubmitting the same search runs it again, no double request for a changed search
• test case 2: browser: reproduced on main, then on the fix: failing and recovering search via Enter and the search icon, from page 2 and with every filter, new matching file shows up after resubmitting, preview errors, request counts, outdated and left searches stay silent, folder scope, Pixel 7

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)