Fix Issue with hidden aggregate fields

[limitednl]

Added the option to keep showing aggregate fields on attributes even when the query is not aggregating.
See: #789

[rappen]

Thanks for this PR!

However, I think you are missing a "not" somewhere...
If I keep the settings default (Hide fields when aggregating is set) it looks like normal for the attributes.
If I uncheck this new setting, aggregate-related properties are never shown.

Are you sure about this feature?

[limitednl]

You are right! The indended logic was not what was implemented. I fixed it in the seccond commit.

Thb, ive not tested it because i dont know how to set up this project in xrmtoolbox and only made the PR to make a starting point for this feature/fix for you to continue on. I do not know what patterns you use and if the solution i suggested is the way you would have implemented it.
I hope it is of some use for you.

[rappen]

Maybe this can help you on with debug your developments?
https://www.xrmtoolbox.com/documentation/for-developers/debug/

[limitednl]

Thanks for letting me know how to debug the code. For me the code works as intended now. It is up to you to decide what to do with it