Revert "Skip flaky test on Linux" and use timeout instead

This reverts commit 49500fa.

Something weird is going on with the Ubuntu CI where some of these tests
hang, needs more investigation.

Author: andyleejordan

test/PowerShellEditorServices.Test/Debugging/DebugServiceTests.cs

@@ -103,7 +103,8 @@ private Task ExecutePowerShellCommand(string command, params string[] args)
 
         private void AssertDebuggerPaused()
         {
-            DebuggerStoppedEventArgs eventArgs = debuggerStoppedQueue.Take(CancellationToken.None);
+            using CancellationTokenSource cts = new(10000);
+            DebuggerStoppedEventArgs eventArgs = debuggerStoppedQueue.Take(cts.Token);
             Assert.Empty(eventArgs.OriginalEvent.Breakpoints);
         }
 
@@ -112,7 +113,8 @@ private void AssertDebuggerStopped(
             int lineNumber = -1,
             CommandBreakpointDetails commandBreakpointDetails = default)
         {
-            DebuggerStoppedEventArgs eventArgs = debuggerStoppedQueue.Take(CancellationToken.None);
+            using CancellationTokenSource cts = new(10000);
+            DebuggerStoppedEventArgs eventArgs = debuggerStoppedQueue.Take(cts.Token);
 
             Assert.True(psesHost.DebugContext.IsStopped);
 
@@ -587,10 +589,9 @@ await debugService.SetLineBreakpointsAsync(
             Assert.Equal("$false", falseVar.ValueString);
         }
 
-        [SkippableFact]
+        [Fact]
         public async Task DebuggerSetsVariablesNoConversion()
         {
-            Skip.If(VersionUtils.IsLinux, "Test hangs on Linux for some reason");
             await debugService.SetLineBreakpointsAsync(
                 variableScriptFile,
                 new[] { BreakpointDetails.Create(variableScriptFile.FilePath, 14) }).ConfigureAwait(true);