Create a new test, instead of adding runtimeconfig.json to the existing Android functional test

[fanyang-mono]

Refer to #50612
Address the +1 comments from the above PR. (Addressed via #56486)
And add incremental build to the msbuild task. (Doc: https://docs.microsoft.com/en-us/visualstudio/msbuild/how-to-build-incrementally?view=vs-2019#to-specify-inputs-and-outputs-for-a-target)

[dotnet-issue-labeler]

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[ghost]

Tagging subscribers to this area: @directhex
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Refer to #50612
Address the +1 comments from the above PR.
And add incremental build to the msbuild task. (Doc: https://docs.microsoft.com/en-us/visualstudio/msbuild/how-to-build-incrementally?view=vs-2019#to-specify-inputs-and-outputs-for-a-target)

Author:	fanyang-mono
Assignees:	fanyang-mono
Labels:	area-Infrastructure-mono, test enhancement, untriaged
Milestone:	6.0.0

[SamMonoRT]

Moving to 7.0.0, test functionality already exists, this is more of a refactoring suggestion.