fix(cypress): disable unsupported-browser redirect in test container

The Cypress browser (Chrome 118 / Electron 27) is below the minimum
browser version required by @nextcloud/browserslist-config's
"baseline widely available" query. Chrome 118 (released Oct 2023)
crossed the 30-month support threshold in April 2026 and dropped out,
causing every page visit to silently redirect to "Your browser is not
supported" instead of loading the app. This prevented #user-menu,
[data-cy-files-list], OCA.Files.Sidebar, and all Vue-rendered elements
from ever appearing, making the entire Cypress test suite fail.

Set no_unsupported_browser_warning=true during container setup so the
browser check is suppressed in the test container.

AI-Assisted-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Anna Larch <anna@nextcloud.com>

Author: miaulalala

cypress.config.ts

@@ -173,6 +173,9 @@ export default defineConfig({
 			await configureNextcloud()
 			// additionally we do not want to DoS the app store
 			runOcc(['config:system:set', 'appstoreenabled', '--value', 'false', '--type', 'boolean'])
+			// Disable the unsupported-browser redirect so Cypress (Chrome 118 / Electron 27)
+			// does not hit the "Your browser is not supported" page on every visit.
+			runOcc(['config:system:set', 'no_unsupported_browser_warning', '--value', 'true', '--type', 'boolean'])
 
 			// for later use in tests save the container name
 			// @ts-expect-error we are adding a custom property