`meson setup` output ignores `b_colorout`

Describe the bug

meson setup -Db_colorout=always does not cause meson setup to produce color output when stdout is not a TTY. It appears that the logging code does not check the flag:

https://github.com/mesonbuild/meson/blob/dbad301c8b039c4469f8727924baf250421d64ac/mesonbuild/mlog.py#L395-L398

To Reproduce

$ cat > meson.build <<EOF
project('c', 'c')
summary('test', true, bool_yn: true)
EOF
$ meson setup build -Db_colorout=always | cat

Expected behavior

The meson setup log includes bold and green text.

system parameters

• Is this a cross build or just a plain native build (for the same computer)? Native
• what operating system (e.g. MacOS Catalina, Windows 10, CentOS 8.0, Ubuntu 18.04, etc.) Fedora 40
• what Python version are you using e.g. 3.8.0 3.12.5
• what meson --version 1.5.2
• what ninja --version if it's a Ninja build n/a