Add Image.getSize device coverage

Summary:
Add an RNTester PlatformTest case that calls Image.getSize against a small PNG, a large JPEG, and an EXIF-rotated JPEG, then verifies the dimensions reported by native image metadata. Extend the existing Image Maestro flow to open the new test and wait for the pass result, so the same flow can run against Android and iOS RNTester builds.

Changelog:
[Internal][Added] - Add RNTester device coverage for Image.getSize dimensions

Differential Revision: D104535939

Author: Abbondanzo

packages/rn-tester/.maestro/image.yml

@@ -10,3 +10,13 @@ appId: ${APP_ID} # iOS: com.meta.RNTester.localDevelopment | Android: com.facebo
 - tapOn:
     id: "Image"
 - assertVisible: "Plain Network Image with `source` prop."
+- scrollUntilVisible:
+    element:
+      text: "Image.getSize"
+    direction: DOWN
+    speed: 40
+- tapOn: "Image.getSize"
+- assertVisible: "Calling Image.getSize for 3 remote images."
+- extendedWaitUntil:
+    visible: "1 Pass"
+    timeout: 30000

packages/rn-tester/js/examples/Image/ImageExample.js

@@ -11,10 +11,12 @@
 'use strict';
 
 import type {RNTesterModuleExample} from '../../types/RNTesterTypes';
+import type {PlatformTestComponentBaseProps} from '../Experimental/PlatformTest/RNTesterPlatformTestTypes';
 import type {ImageProps, LayoutChangeEvent} from 'react-native';
 
 import RNTesterButton from '../../components/RNTesterButton';
 import RNTesterText from '../../components/RNTesterText';
+import RNTesterPlatformTest from '../Experimental/PlatformTest/RNTesterPlatformTest';
 import ImageCapInsetsExample from './ImageCapInsetsExample';
 import * as React from 'react';
 import {useEffect, useState} from 'react';
@@ -673,6 +675,102 @@ const smallImage = {
   uri: IMAGE1,
 };
 
+const GET_SIZE_TEST_IMAGES: ReadonlyArray<{
+  expectedHeight: number,
+  expectedWidth: number,
+  name: string,
+  uri: string,
+}> = [
+  {
+    expectedHeight: 64,
+    expectedWidth: 64,
+    name: 'small PNG',
+    uri: 'https://reactnative.dev/img/tiny_logo.png',
+  },
+  {
+    expectedHeight: 1500,
+    expectedWidth: 2250,
+    name: 'large JPEG',
+    uri: 'https://images.pexels.com/photos/842711/pexels-photo-842711.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=2',
+  },
+  {
+    expectedHeight: 1200,
+    expectedWidth: 1800,
+    name: 'EXIF rotated JPEG',
+    uri: 'https://raw.githubusercontent.com/recurser/exif-orientation-examples/master/Landscape_6.jpg',
+  },
+];
+
+function getImageSize(uri: string): Promise<{height: number, width: number}> {
+  return new Promise((resolve, reject) => {
+    Image.getSize(uri, (width, height) => resolve({height, width}), reject);
+  });
+}
+
+function ImageGetSizePlatformTest(props: PlatformTestComponentBaseProps) {
+  const {harness} = props;
+  const asyncTest = harness.useAsyncTest(
+    'Image.getSize resolves source dimensions',
+    30000,
+  );
+
+  useEffect(() => {
+    let cancelled = false;
+
+    async function runTest() {
+      try {
+        const results = await Promise.all(
+          GET_SIZE_TEST_IMAGES.map(async image => ({
+            ...image,
+            ...(await getImageSize(image.uri)),
+          })),
+        );
+
+        if (cancelled) {
+          return;
+        }
+
+        for (const result of results) {
+          asyncTest.step(({assert_equals}) => {
+            assert_equals(
+              result.width,
+              result.expectedWidth,
+              `${result.name} width`,
+            );
+            assert_equals(
+              result.height,
+              result.expectedHeight,
+              `${result.name} height`,
+            );
+          });
+        }
+      } catch (error: unknown) {
+        if (!cancelled) {
+          asyncTest.step(({assert_true}) => {
+            assert_true(false, `Image.getSize failed: ${String(error)}`);
+          });
+        }
+      } finally {
+        if (!cancelled) {
+          asyncTest.done();
+        }
+      }
+    }
+
+    void runTest();
+
+    return () => {
+      cancelled = true;
+    };
+  }, [asyncTest]);
+
+  return (
+    <RNTesterText>
+      Calling Image.getSize for {GET_SIZE_TEST_IMAGES.length} remote images.
+    </RNTesterText>
+  );
+}
+
 const styles = StyleSheet.create({
   base: {
     width: 64,
@@ -1564,6 +1662,18 @@ exports.examples = [
       return <ImageSizeExample source={fullImage} />;
     },
   },
+  {
+    title: 'Image.getSize',
+    render: function (): React.Node {
+      return (
+        <RNTesterPlatformTest
+          title="Image.getSize"
+          description="Calls Image.getSize and verifies the source dimensions returned by native image metadata."
+          component={ImageGetSizePlatformTest}
+        />
+      );
+    },
+  },
   {
     title: 'MultipleSourcesExample',
     description: