Fix screen share by force-starting portal services (#1604)

[Vic-41148]

Description

Adds a single exec-once line to autostart.conf that force-starts both portal services on boot, fixing browser/OBS/Discord screen sharing.

Changes

• Bug Fixes

Context

Hyprland never activates graphical-session.target. Both xdg-desktop-portal.service and xdg-desktop-portal-hyprland.service depend on that target via Requisite=/PartOf=, so they fail to start on boot with a dependency error. This breaks screencast entirely — Meet, Discord, and OBS all rely on these services. The fix force-starts both with --ignore-dependencies, bypassing the broken dependency check. Builds on the workaround originally posted by @anikmar in #1604, extended here to also cover xdg-desktop-portal-hyprland.service, which needs the same fix separately.

How Has This Been Tested?

• Tested on Arch Linux/Based Distro.

Confirmed xdg-desktop-portal.service and xdg-desktop-portal-hyprland.service both go active (running) after a fresh boot, and screen sharing works in Google Meet (browser) and OBS (PipeWire source).

Checklist

• My code follows the style guidelines of this project.
• I have performed a self-review of my code.
• I have commented on my code, particularly in hard-to-understand areas.
• My changes do not introduce new warnings.

Related Issues

Fixes #1604

Additional Notes

Minimal, single-line diff in autostart.conf — no other files touched.