fix(wayvnc): always restart, even on clean exit

wayvnc exits with status 0 when it loses its capture output (e.g. the
idle daemon powering the screen off), so Restart=on-failure never
brought it back. Restart=always + StartLimitIntervalSec=0 keeps it
retrying until the output returns.

.config/systemd/user/wayvnc.service

@@ -7,8 +7,9 @@ Requisite=graphical-session.target
 [Service]
 Type=simple
 ExecStart=/usr/bin/wayvnc
-Restart=on-failure
-RestartSec=2
+Restart=always
+RestartSec=5
+StartLimitIntervalSec=0
 
 [Install]
 WantedBy=graphical-session.target