Make build directory TextField editable again

Prior to 4.12 the build path was a simple TextField in Project -> Build -> Build directory where one could directly edit the path. Fore example I would often feel the need to compile into a new empty directory. With the old system I could simply add a number to the path:

• C:\Users\Kelteseth\Documents\build-PopupBug-Desktop_Qt_5_15_0_MSVC2019_64bit-Debug2222

and QtCreator would create this directory for me. Now I have a TextField that contains the build path that I only can alter via selecting a new folder. So I have to manually create a new folder and set a folder name inside the folder selection dialog.

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