[service] Build header_only=False when True by default

[Croydon]

Splitting of from #7238 (comment)

//cc @jgsogo

[jgsogo]

Added to the backlog. We need to revisit the logic we use to generate the profiles.

[Croydon]

Was this ever discussed?

[AbrilRBS]

Have you noticed any issues with it? As far as I can tell, the header_onlyhandling is properly implemented now (and in the new soon-to-come pipeline!)

[Croydon]

Indeed, seems to be fixed

True by default, builds False:
https://github.com/conan-io/conan-center-index/blob/7893fb193c478e92b1d14ed90bceb16d7f86e88e/recipes/chaiscript/all/conanfile.py#L29C1-L29C44
https://conan.io/center/recipes/chaiscript?version=6.1.0 (package with no os/options etc displayed is header_only=True)

False by default, builds True:
https://github.com/conan-io/conan-center-index/blame/7893fb193c478e92b1d14ed90bceb16d7f86e88e/recipes/libigl/all/conanfile.py#L33
https://conan.io/center/recipes/libigl?version=2.5.0