Code cleanup in Microsoft.Common.tasks

[jrdodds]

Fixes # (Issue to be created)

Context

Minor code cleanup in Microsoft.Common.tasks.

Changes Made

Removed duplicate UsingTask for the ResolveSDKReference task. The redundant ResolveSDKReference doesn't seem to create harm but is not useful.

Alphabetized the UsingTask elements. Retained the separate grouping of Roslyn tasks. Retained the blank lines around tasks that have different Runtimes and/or Conditions (i.e. GenerateResource, RegisterAssembly, and UnregisterAssembly). Ordering the UsingTask elements is intended to aid inspection and maintenance of tasks.

Testing

Tested on Windows 11 and macOS 12. Tested by running unit tests and by having this change in several development branches where msbuild has been run on project files.

Notes

This change is included in the implementation for #8613, which is PR #8614.

[jrdodds]

Note: There seem to be some issues with the msbuild-pr pipeline. Build 20230412.4 failed with restore issues and with a failed unit test. I reverted the branch specific commits and the build succeeded. I reverted the reversion and the build (20230412.10) succeeded.

[ladipro]

Looks like a safe change. Thank you!

[Forgind]

Thanks!

[Forgind]

Thanks @jrdodds!

[danmoseley]

as an aside, I hope/assume XmlTextReader interns all the duplicate "Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" strings for us. So there is no memory advantage in pulling it out into a property.