Update availability checks

Author: fabianfett

Sources/NIOEmbedded/AsyncTestingEventLoop.swift

@@ -512,7 +512,7 @@ extension NIOAsyncTestingEventLoop: NIOSerialEventLoopExecutor {}
 
 // MARK: TaskExecutor conformance
 #if compiler(>=6.0)
-@available(macOS 9999.0, iOS 9999.0, watchOS 9999.0, tvOS 9999.0, *)
+@available(macOS 15.0, iOS 18.0, tvOS 18.0, watchOS 11.0, *)
 extension NIOAsyncTestingEventLoop: NIOTaskEventLoopExecutor { }
 #endif
 

Sources/NIOPosix/SelectableEventLoop.swift

@@ -1084,7 +1084,5 @@ extension SelectableEventLoop {
 // MARK: TaskExecutor conformance
 #if compiler(>=6.0)
 @available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
-extension SelectableEventLoop: NIOTaskEventLoopExecutor {
-    
-}
+extension SelectableEventLoop: NIOTaskEventLoopExecutor { }
 #endif

Tests/NIOPosixTests/TaskExecutorTests.swift

@@ -18,36 +18,6 @@ import XCTest
 
 final class TaskExecutorTests: XCTestCase {
     #if compiler(>=6.0)
-    @available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
-    func testBasicExecutorFitsOnEventLoop_MTELG() async throws {
-        let group = MultiThreadedEventLoopGroup(numberOfThreads: 2)
-        let loops = Array(group.makeIterator())
-        await withTaskGroup(of: Void.self) { taskGroup in
-            let loop0Executor = loops[0].taskExecutor
-            let loop1Executor = loops[1].taskExecutor
-            taskGroup.addTask(executorPreference: loop0Executor) {
-                loops[0].assertInEventLoop()
-                loops[1].assertNotInEventLoop()
-
-                withUnsafeCurrentTask { task in
-                    // this currently fails on macOS
-                    XCTAssertEqual(task?.unownedTaskExecutor, loop0Executor.asUnownedTaskExecutor())
-                }
-            }
-
-            taskGroup.addTask(executorPreference: loop1Executor) {
-                loops[0].assertNotInEventLoop()
-                loops[1].assertInEventLoop()
-
-                withUnsafeCurrentTask { task in
-                    // this currently fails on macOS
-                    XCTAssertEqual(task?.unownedTaskExecutor, loop1Executor.asUnownedTaskExecutor())
-                }
-            }
-        }
-        try await group.shutdownGracefully()
-    }
-
     @available(macOS 15.0, iOS 18.0, watchOS 11.0, tvOS 18.0, visionOS 2.0, *)
     func _runTests(loop1: some EventLoop, loop2: some EventLoop) async {
         let executor1 = loop1.taskExecutor