fix(test): Handle permission dialog and clean up notification shade

Three fixes for flaky notification tests on CI emulators:

1. Handle the POST_NOTIFICATIONS permission dialog explicitly in the
   Maestro flow, in case Maestro's `permissions: all: allow` doesn't
   grant it reliably.
2. Collapse the notification shade in onFlowStart to prevent cascade
   failures when a previous test left it open.
3. Add waitForAnimationToEnd inside the swipe retry loop to give the
   shade time to render.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: romtsn

sentry-android-integration-tests/sentry-uitest-android-critical/maestro/.maestro/config.yaml

@@ -2,8 +2,15 @@ platform:
   android:
     disableAnimations: true
 onFlowStart:
+  # Dismiss any ANR dialog (e.g. "Pixel Launcher isn't responding")
   - runFlow:
       when:
         visible: "Close app"
       commands:
         - tapOn: "Close app"
+  # Collapse notification shade if left open from a previous test
+  - swipe:
+      start: 50%, 50%
+      end: 50%, 1%
+      duration: 300
+  - pressKey: home

sentry-android-integration-tests/sentry-uitest-android-critical/maestro/appStart.yaml

@@ -23,6 +23,12 @@ name: App Start Tests
       all: allow
 - assertVisible: "Welcome!"
 - tapOn: "Trigger Notification"
+# Grant notification permission if the system dialog appears
+- runFlow:
+    when:
+      visible: "Allow"
+    commands:
+      - tapOn: "Allow"
 - tapOn: "Finish Activity"
 - assertNotVisible: "Welcome!"
 - waitForAnimationToEnd
@@ -35,6 +41,7 @@ name: App Start Tests
           start: 50%, 1%
           end: 50%, 50%
           duration: 1000
+      - waitForAnimationToEnd
 - tapOn: "Sentry Test Notification"
 - assertVisible: "App Start Type: WARM"
 
@@ -45,6 +52,12 @@ name: App Start Tests
       all: allow
 - assertVisible: "Welcome!"
 - tapOn: "Trigger Notification"
+# Grant notification permission if the system dialog appears
+- runFlow:
+    when:
+      visible: "Allow"
+    commands:
+      - tapOn: "Allow"
 - tapOn: "Finish Activity"
 - assertNotVisible: "Welcome!"
 - killApp
@@ -58,6 +71,7 @@ name: App Start Tests
           start: 50%, 1%
           end: 50%, 50%
           duration: 1000
+      - waitForAnimationToEnd
 - tapOn: "Sentry Test Notification"
 - assertVisible: "App Start Type: COLD"
 # Test 5: Launch app after a broadcast receiver already created the application