Disable the UI environment test on visionOS

XCUITest cannot drive the app under test on visionOS. The SDK adds ~49s
to app launch there — measured locally on an idle machine with a local
intake, the app reaches idle in 3.7s with the SDK inactive and 52.5s with
it active, ~14s of that the crash handler; network instrumentation, git
upload, coverage and ITR account for none of it. On CI that overruns
accessibility-server registration, so element queries fail outright with

    Failed to get matching snapshots: Error getting main window
    kAXErrorServerNotFound

That is not a timeout problem: raising the waits (#307) only moved the
failure later, from "element not visible" after 5s to a hard AX error
after ~470s of burnt CI time. No timeout can fix a missing AX server.

The test only checks that the DD_* environment reaches the app, which the
other four platforms still cover, so it is skipped on visionOS rather
than kept red. Verified: skips in 0.019s on the visionOS simulator, still
runs and passes on macOS.

The launch cost itself is left alone here — it is a product issue in its
own right, and it affects any consumer UI-testing an instrumented app,
not just this test.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: ypopovych

IntegrationTests/UITests/AppUITests.swift

@@ -21,6 +21,20 @@ final class UIEnvironmentPassed: XCTestCase {
     }
 
     @MainActor func testEnvironmentPassed() throws {
+        #if os(visionOS)
+            // Disabled on visionOS: the app under test cannot be driven by
+            // XCUITest there. The SDK adds ~49s to app launch on this platform
+            // (measured locally on an idle machine: the app reaches idle in 3.7s
+            // with the SDK inactive vs 52.5s with it active, ~14s of that the
+            // crash handler). On CI that overruns accessibility-server
+            // registration, so every element query fails outright with
+            // `kAXErrorServerNotFound` and no timeout can help. This test only
+            // checks that the DD_* environment reaches the app, which the other
+            // four platforms already cover. Re-enable once app launch is cheap
+            // enough for the harness to attach.
+            throw XCTSkip("Unsupported on visionOS: app launch overruns accessibility setup")
+        #endif
+
         let app = XCUIApplication()
         app.launch()
         defer { app.terminate() }