Fix macOS/iOS build due to missing NS_SWIFT_SENDABLE macro (#721)

* Add check if `NS_SWIFT_SENDABLE` macro defined (for legacy Xcode versions)

* Update changelog

Author: tustanivsky

CHANGELOG.md

@@ -7,6 +7,10 @@
 - Add API allowing to start/finish transactions and spans with explicit timings ([#715](https://github.com/getsentry/sentry-unreal/pull/715))
 - Add GPU crash dump attachments ([#712](https://github.com/getsentry/sentry-unreal/pull/712))
 
+### Fixes
+
+- Fix macOS/iOS build errors due to missing `NS_SWIFT_SENDABLE` macro definition ([#721](https://github.com/getsentry/sentry-unreal/pull/721))
+
 ### Dependencies
 
 - Bump Native SDK from v0.7.16 to v0.7.17 ([#717](https://github.com/getsentry/sentry-unreal/pull/717))

plugin-dev/Source/Sentry/Private/Apple/Convenience/SentryInclude.h

@@ -4,6 +4,10 @@
 
 #include "HAL/Platform.h"
 
+#ifndef NS_SWIFT_SENDABLE
+#define NS_SWIFT_SENDABLE
+#endif
+
 #if PLATFORM_MAC
 #include <Sentry/Sentry.h>
 #include <Sentry/PrivateSentrySDKOnly.h>