Add some additional logging to ErrorPageMiddlewareWebSite (#8049)
Add some additional logging to ErrorPageMiddlewareWebSite (#8049)

* Add some additional logging to ErrorPageMiddlewareWebSite

DeveloperExceptionMiddleware will log an error if rendering the exception page
throws. The test failure in https://github.com/aspnet/AspNetCore-Internal/issues/1730
suggests that we encountered an error like so but do not have anything further to go by.

This change adds logging to the test so we could identify possible issues


aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore