enable customization of program & portfolio header

[#1]

please enable the same functionality introduced with 22.3 to customize the project header to programs & portfolios.

This will help us remove wrong data from being a visual focus for users. (wrong b/c our workflow is different)

[#2]

The goal of this suggestion is to enable the same functionality introduced with 22.3 for projects to the program and portfolio level. (The exact same needs exist.)

[#3]

This would be great! We really want to remove the % Complete from Programs, for example, as it does not calculate correctly for our use.