UI: Link Qt::DBus on FreeBSD

[emaste]

As with Linux we need to link Qt::DBus on FreeBSD now that there's a HighContrastEnabled implementation that makes use of it.

Fixes: 41ba8bd ("UI: Add HighContrastEnabled implementation fo...")

Description

Link Qt::DBus on FreeBSD

Motivation and Context

41ba8bd added a HighContrastEnabled implementation which makes use of DBus, and updated UI/cmake/os-linux.cmake to link Qt:DBus. os-freebsd.cmake needs the same change.

How Has This Been Tested?

Built-tested on my laptop.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code has been run through clang-format.
• I have read the contributing document.
• My code is not on the master branch.
• The code has been tested.
• All commit messages are properly formatted and commits squashed where appropriate.
• I have included updates to all appropriate documentation.

[emaste]

With this change obs builds and runs on my FreeBSD 15 laptop. I'm not sure about the build failures in FreeBSD CI just yet.

[emaste]

I'm not sure about the build failures in FreeBSD CI just yet.

It seems to just be the case that CI is running with -Werror and my local build is not. I have the following warning counts:

 326 implicit conversion loses integer precision: '<type>' (aka '<type>') to '<type>' [-Wshorten-64-to-32]
   2 indirection of non-volatile null pointer will be deleted, not trap [-Wnull-dereference]
   1 comparison of integers of different signs: 'int' and 'uint_fast8_t' (aka 'unsigned int') [-Wsign-compare]
   1 code will never be executed [-Wunreachable-code]
   1 'PySys_SetArgv' is deprecated [-Wdeprecated-declarations]

[tytan652]

LGTM

[RytoEX]

Looks good to me, and fixes an oversight in 41ba8bd (#9653).