1671d8c112
Eliminates the opt-out of `-Wunguarded-availability-new` in the `ios_test_flutter` target.
Xcode 15 beta XCTest framework headers contained unguarded usage of iOS 17 API. This bug resulted in engine build failures.
This was fixed in a later XCTest framework release.
```
/Applications/Xcode_15-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks/XCTest.framework/Headers/XCUIAccessibilityAuditTypes.h:19:30: error: 'XCUIAccessibilityAuditType' is only available on iOS 17.0 or newer [-Werror,-Wunguarded-availability-new]
19 | typedef NS_OPTIONS(uint64_t, XCUIAccessibilityAuditType) {
| ^
/Applications/Xcode_15-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks/XCTest.framework/Headers/XCUIAccessibilityAuditTypes.h:19:30: note: 'XCUIAccessibilityAuditType' has been marked as being introduced in iOS 17.0 here, but the deployment target is iOS 13.0.0
/Applications/Xcode_15-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/Library/Frameworks/XCTest.framework/Headers/XCUIAccessibilityAuditTypes.h:19:9: note: annotate anonymous enum with an availability attribute to silence this warning
19 | typedef NS_OPTIONS(uint64_t, XCUIAccessibilityAuditType) {
| ^
/Applications/Xcode_15-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator17.0.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSObjCRuntime.h:383:34: note: expanded from macro 'NS_OPTIONS'
383 | #define NS_OPTIONS(_type, _name) CF_OPTIONS(_type, _name)
| ^
/Applications/Xcode_15-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator17.0.sdk/System/Library/Frameworks/CoreFoundation.framework/Headers/CFAvailability.h:155:96: note: expanded from macro 'CF_OPTIONS'
155 | #define CF_OPTIONS(_type, _name) __attribute__((availability(swift,unavailable))) _type _name; enum __CF_OPTIONS_ATTRIBUTES : _name
|
```
Issue: https://github.com/flutter/flutter/issues/128958
[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style