test: iOS E2E tests set OS version (WordPress#55661)

* test: iOS E2E tests set OS version

Without setting this, cryptic errors result where Xcode may attempt to
build the app for the local development machine, rather than the
targeted iOS simulator.

```
** BUILD FAILED **

❌ gutenberg/packages/react-native-editor/ios/GutenbergDemo.xcodeproj: Provisioning profile "Gutenberg Development" doesn't include the currently selected device "MacBook Pro" (identifier [REDACTED]). (in target 'GutenbergDemo' from project 'GutenbergDemo')
```

* docs: Fix incorrect E2E test example scripts

The nested npm script requires additional `--` separators to pass the
argument to the resulting Jest command.

packages/react-native-editor/__device-tests__/README.md

@@ -70,7 +70,7 @@ You can filter which test runs by one of two ways:
 npm run native test:e2e:ios:local gutenberg-editor-paragraph.test.js
 
 # Enable watch mode on iOS
-npm run native test:e2e:ios:local -- --watch
+npm run native test:e2e:ios:local -- -- -- --watch
 ```
 
 ## Speeding Up Test Runs
@@ -90,7 +90,11 @@ While we must run all of these at least once to produce a testable app, it is of
 By default `device-tests:local` runs tests for Android. To run tests on iOS, you can prefix the script with the `TEST_RN_PLATFORM` environment variable.
 
 ```shell
+# Run tests on iOS
 TEST_RN_PLATFORM=ios npm run native device-tests:local
+
+# Run tests on iOS with watch mode enabled
+TEST_RN_PLATFORM=ios npm run native device-tests:local -- -- --watch
 ```
 
 ## Debugging Tests

packages/react-native-editor/bin/build_e2e_ios_app

@@ -2,7 +2,7 @@
 
 set -o pipefail
 
-DEFAULT_DESTINATION='platform=iOS Simulator,name=iPhone 14'
+DEFAULT_DESTINATION='platform=iOS Simulator,name=iPhone 14,OS=16.2'
 if [[ -z "${RN_EDITOR_E2E_IOS_DESTINATION-}" ]]; then
 	DESTINATION="$DEFAULT_DESTINATION"
 else

packages/react-native-editor/package.json

@@ -115,7 +115,7 @@
 		"test:e2e:android:local": "npm run test:e2e:bundle:android && npm run test:e2e:build-app:android && TEST_RN_PLATFORM=android npm run device-tests:local",
 		"test:e2e:bundle:ios": "mkdir -p ios/build/GutenbergDemo/Build/Products/Release-iphonesimulator/GutenbergDemo.app && npm run bundle:ios && cp bundle/ios/App.js ./ios/build/GutenbergDemo/Build/Products/Release-iphonesimulator/GutenbergDemo.app/main.jsbundle && cp -r bundle/ios/assets ./ios/build/GutenbergDemo/Build/Products/Release-iphonesimulator/GutenbergDemo.app/",
 		"test:e2e:build-app:ios": "npm run preios && ./bin/build_e2e_ios_app",
-		"test:e2e:build-wda": "xcodebuild -project ~/.appium/node_modules/appium-xcuitest-driver/node_modules/appium-webdriveragent/WebDriverAgent.xcodeproj -scheme WebDriverAgentRunner -destination 'platform=iOS Simulator,name=iPhone 14' -derivedDataPath ios/build/WDA",
+		"test:e2e:build-wda": "xcodebuild -project ~/.appium/node_modules/appium-xcuitest-driver/node_modules/appium-webdriveragent/WebDriverAgent.xcodeproj -scheme WebDriverAgentRunner -destination 'platform=iOS Simulator,name=iPhone 14,OS=16.2' -derivedDataPath ios/build/WDA",
 		"test:e2e:ios:local": "npm run test:e2e:bundle:ios && npm run test:e2e:build-app:ios && npm run test:e2e:build-wda && TEST_RN_PLATFORM=ios npm run device-tests:local",
 		"build:gutenberg": "cd gutenberg && npm ci && npm run build",
 		"clean": "npm run clean:build-artifacts; npm run clean:aztec; npm run clean:haste; npm run clean:metro; npm run clean:watchman",