Pull in upstream trunk Testing fix for Android on the CI

Author: finagolfin

swift-android-trunk-libdispatch.patch

@@ -13,3 +13,24 @@ index 016bf294..5c42986a 100644
  endif()
 
  if(dispatch_FOUND)
+commit 5ac9500a5d858868e518a56fa0197be65b759ef4
+Author: Jonathan Grynspan <[email protected]>
+Date:   Thu Oct 16 18:57:31 2025 -0400
+
+    Fix backtrace() call on Android being optional
+
+diff --git a/swift-testing/Sources/Testing/SourceAttribution/Backtrace.swift b/swift-testing/Sources/Testing/SourceAttribution/Backtrace.swift
+index 6f6fcaab..552e16d6 100644
+--- a/swift-testing/Sources/Testing/SourceAttribution/Backtrace.swift
++++ b/swift-testing/Sources/Testing/SourceAttribution/Backtrace.swift
+@@ -77,7 +77,9 @@ public struct Backtrace: Sendable {
+       }
+ #elseif os(Android)
+ #if !SWT_NO_DYNAMIC_LINKING
+-      initializedCount = .init(clamping: _backtrace?(addresses.baseAddress!, .init(clamping: addresses.count)))
++      if let _backtrace {
++        initializedCount = .init(clamping: _backtrace(addresses.baseAddress!, .init(clamping: addresses.count)))
++      }
+ #endif
+ #elseif os(Linux) || os(FreeBSD) || os(OpenBSD)
+       initializedCount = .init(clamping: backtrace(addresses.baseAddress!, .init(clamping: addresses.count)))