common/desktop-exports: export PULSE_SERVER
common/desktop-exports: export PULSE_SERVER

Simplify PulseAudio socket setup. Drop the symlinks and instead set up
PULSE_SERVER to point to the original XDG_RUNTIME_DIR socket.

Signed-off-by: Maciej Borzecki <5fa2508e2b1cdae720a9c0360bd78f1653429f38@canonical.com>

ubuntu/snapcraft-desktop-helpers