Fix flaky test testTasksScheduledDuringShutdownAreAutomaticallyCancel… (

#3036)

…ledOrNotScheduledAnymore

# Motivation

This task was flaky and hit the assertion with the count being 1

# Modification

This changes the expectation to greater than 0 since we can always
guarantee that one scheduled task is run but due to timing windows it
might be that we shutdown the EL before the second task is enqueued
which meant it was immediately failed.

# Result

One less flaky test

Tests/NIOEmbeddedTests/AsyncTestingEventLoopTests.swift

@@ -480,7 +480,7 @@ final class NIOAsyncTestingEventLoopTests: XCTestCase {
         }
     }
 
-    func testTasksScheduledDuringShutdownAreAutomaticallyCancelled() async throws {
+    func testTasksScheduledDuringShutdownAreAutomaticallyCancelledOrNotScheduled() async throws {
         let eventLoop = NIOAsyncTestingEventLoop()
         let tasksRun = ManagedAtomic(0)
 
@@ -511,7 +511,7 @@ final class NIOAsyncTestingEventLoopTests: XCTestCase {
         }
 
         try await eventLoop.executeInContext {
-            XCTAssertGreaterThan(tasksRun.load(ordering: .acquiring), 1)
+            XCTAssertGreaterThan(tasksRun.load(ordering: .acquiring), 0)
         }
     }