Add Image visual regression tests (#59341)

Summary:
Pull Request resolved: #59341

Add a Maestro visual suite for `Image` using existing RNTester examples. Capture stable cropped checkpoints after opening each example and settling animations.

See `packages/rn-tester/visual-tests/suites/image.md` for the example and checkpoint inventory.

Changelog: [Internal]

Reviewed By: Abbondanzo

Differential Revision: D126723204

Author: cortinico

packages/rn-tester/visual-tests/flows/image.yml

@@ -0,0 +1,34 @@
+appId: ${APP_ID}
+---
+- runFlow:
+    file: ../helpers/open-example.yml
+    env:
+      EXAMPLE_URL: rntester://example/ImageExample/static-image
+- extendedWaitUntil:
+    visible:
+      id: 'image-static'
+    timeout: 15000
+- waitForAnimationToEnd:
+    timeout: 5000
+- takeScreenshot:
+    path: ${VISUAL_OUTPUT_DIR}/image/static-image/default
+    cropOn:
+      id: 'image-static'
+- runFlow:
+    when:
+      platform: iOS
+    commands:
+      - runFlow:
+          file: ../helpers/open-example.yml
+          env:
+            EXAMPLE_URL: rntester://example/ImageExample/base64-image
+      - extendedWaitUntil:
+          visible:
+            id: 'image-base64'
+          timeout: 15000
+      - waitForAnimationToEnd:
+          timeout: 5000
+      - takeScreenshot:
+          path: ${VISUAL_OUTPUT_DIR}/image/base64/default
+          cropOn:
+            id: 'image-base64'

packages/rn-tester/visual-tests/suites/image.md

@@ -0,0 +1,10 @@
+# Image visual tests
+
+| Example | Checkpoints |
+| --- | --- |
+| `static-image` | Initial rendering |
+| `base64-image` | Initial rendering (iOS example) |
+
+Screenshots use the existing RNTester example crops. Each example starts from a fresh app launch; captures wait for the target and for animations to settle.
+
+These cases use bundled or inline images so captures do not depend on network downloads.