Align primary buttons alignment

[hediet]

VS Code has primary buttons.

Most often the primary button is left aligned, but sometimes it is right-aligned.

Left Aligned:

• Windows dialogs
• Notifications
• Export profile dialog

Right aligned:

• Create PR
• Comments

[alexr00]

PR description also does right aligned:

Workspace trust is left aligned:

[hediet]

But PR title toolbar is left aligned (checkout 'distro'):

[bpasero]

Keep in mind that there maybe platform differences as well and we try to align with the OS guidelines. I think Windows puts primary button to the left and Linux to the right if I remember correctly, at least in native dialogs.