Disable SystemWebAppManagerMulti...LaunchToActiveDesktop

Test is failing on linux-chromeos-rel builder.

Tbr: qjw@chromium.org
Bug: 1151227
Change-Id: I00548b9d023cf1f79db3af96b347678a33cc4190
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2550672Reviewed-by: Maksim Moskvitin <mmoskvitin@google.com>
Commit-Queue: Maksim Moskvitin <mmoskvitin@google.com>
Cr-Commit-Position: refs/heads/master@{#829607}

chrome/browser/ui/web_applications/test/system_web_app_ui_browsertest.cc

@@ -517,7 +517,7 @@ class SystemWebAppManagerMultiDesktopLaunchBrowserTest
 };
 
 IN_PROC_BROWSER_TEST_F(SystemWebAppManagerMultiDesktopLaunchBrowserTest,
-                       LaunchToActiveDesktop) {
+                       DISABLED_LaunchToActiveDesktop) {
   // Login two users.
   LoginUser(account_id1_);
   base::RunLoop().RunUntilIdle();