Add [GeneratedCode] for more RDG output

[martincostello]

Add [GeneratedCode] for more RDG output

Add [GeneratedCode] to more of the types emitted by the Request Delegate Generator.

Description

Mark more of the code emitted by the Request Delegate Generator as non-user code so that it should be excluded from reports from code coverage tools.

I wasn't sure on what a good way to add a test for this is, so I haven't included a test change. Happy to add something if you have a preferred approach.

Fixes #48376.

[ghost]

Thanks for your PR, @martincostello. Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[mitchdenny]

Thanks for the submission. You'll need to regenerate the baselines in order for the tests to pass. Look in the TestBase class there is a field that you can set to true which will cause it to update all the baselines and then set it back to false and the tests should then pass.

[martincostello]

Thanks for pointing that out - I was just about to go looking at manually updating them before I saw your comment. Will push up the test fixes once I've gotten the repo setup nicely for debugging.

[mitchdenny]

Thanks for the contribution Martin!