Session management restores empty browser, not the PWA

[altruizine]

Description

Using KDE with session management enabled, session restoration opens an empty browser window (with full chrome) instead of the PWA that was open when the session was saved.

Steps to Reproduce

1. Use KDE with session management enabled (the default, I believe).
2. Open any PWA
3. Log out, saving the session
4. Log back in, restoring the session
5. Applications are restored, but instead of the PWA, there's an empty browser window.

Additional Information

I'm sure this is an instance of the firefoxpwa runtime because the Firefox version sometimes is different from my system's version, and the profile appears to be a fresh profile, not my regular Firefox profile.

Depending on how often this has happened and how fresh the profile is that that browser uses, there may be additional dialog boxes such as “make Firefox your default browser” and the like.

This may be related to earlier bugs related to session management, including #227.

Environment

• Operating system: openSUSE Leap 15.6
• System architecture: x86-64
• Desktop environment: KDE Plasma 5.27.11
• Installation method: RPM
• PWAsForFirefox extension version: 2.14.1
• PWAsForFirefox native version: 2.14.1
• PWAsForFirefox runtime version: 136.0.1
• Firefox version: 136.0.1