wrong channel installed by default on fresh install with explicit version

[ghyatzo]

Hello,

when running julia +x.y.z on a fresh machine this is the output:

> julia.exe +1.12.6 
    Checking for new Julia versions
  Installing Julia 1.12.6+0.x64.w64.mingw32
         Add Installed Julia channel 'release'
Question: The Juliaup channel '1.12.6' is not installed. Would you like to install it?: Yes and remember my choice (always auto-install)
   Configure Auto-install preference set to 'true'.
  Installing Julia 1.12.6 as requested
    Checking for new Julia versions
         Add Installed Julia channel '1.12.6'

I think it would be better to install the explicitly asked channel automatically (on a fresh install only) and then ask for additional channels to be installed (if at all), rather than installing release by default and the explicitly requested channel only on confirmation.