Unskip error list tests

[dibarbet]

Verifying on scouting queue (17.4p1) that these test pass

Resolves #61367

Need to re-run after #63610

[dibarbet]

Closing, still flaky. Failed 1/10 iterations with

Actual and expected values differ. Expected shown in baseline of diff:
+(Compiler) Class1.cs(2, 7): error CS0518: Predefined type 'System.Object' is not defined or imported
+(Compiler) Class1.cs(2, 7): error CS1729: 'object' does not contain a constructor that takes 0 arguments
(Compiler) Class1.cs(4, 12): error CS0246: The type or namespace name 'P' could not be found (are you missing a using directive or an assembly reference?)
-(Compiler) Class1.cs(6, 24): error CS0117: 'Console' does not contain a definition for 'WriteLin'
+(Compiler) Class1.cs(4, 12): error CS0518: Predefined type 'System.Object' is not defined or imported
+(Compiler) Class1.cs(4, 5): error CS0518: Predefined type 'System.Void' is not defined or imported
+(Compiler) Class1.cs(6, 9): error CS0103: The name 'System' does not exist in the current context
+(Compiler) Class1.cs(6, 9): error CS0518: Predefined type 'System.Object' is not defined or imported
+(Compiler) Class1.cs(9, 12): error CS0518: Predefined type 'System.Void' is not defined or imported
+(Compiler) Class1.cs(9, 22): error CS0518: Predefined type 'System.String' is not defined or imported

Expected: True
Actual:   False

https://dev.azure.com/dnceng-public/public/_build/results?buildId=79311&view=ms.vss-test-web.build-test-results-tab&runId=1658296&resultId=100580&paneView=debug

[sharwell]

Reopened this so the tests will run again