Update F39 image so that xdg-open links to flatpak-xdg-open

[notfirefox]

This implements the changes proposed here.

Changes

• Adds the flatpak-xdg-utils to the list of extra packages
• Links xdg-open to flatpak-xdg-open

Closes #291

[softwarefactory-project-zuul]

Build succeeded.
https://softwarefactory-project.io/zuul/t/local/buildset/c6b891962c544703a307fab6ea440544

✔️ unit-test SUCCESS in 5m 11s
✔️ unit-test-migration-path-for-coreos-toolbox SUCCESS in 3m 19s
✔️ unit-test-restricted SUCCESS in 3m 56s
✔️ system-test-fedora-rawhide SUCCESS in 32m 28s
✔️ system-test-fedora-39 SUCCESS in 33m 28s
✔️ system-test-fedora-38 SUCCESS in 33m 16s

[debarshiray]

Could you please correct your Git authorship information with your full name and a real email address, unless you are worried about privacy?

[notfirefox]

Could you please correct your Git authorship information with your full name and a real email address, unless you are worried about privacy?

I'd prefer to keep the authorship information as it is because of privacy concerns.

[softwarefactory-project-zuul]

Build succeeded.
https://softwarefactory-project.io/zuul/t/local/buildset/b808a643ee214186b99394b1a4468b5d

✔️ unit-test SUCCESS in 4m 57s
✔️ unit-test-migration-path-for-coreos-toolbox SUCCESS in 3m 32s
✔️ unit-test-restricted SUCCESS in 3m 50s
✔️ system-test-fedora-rawhide SUCCESS in 32m 18s
✔️ system-test-fedora-39 SUCCESS in 33m 11s
✔️ system-test-fedora-38 SUCCESS in 34m 01s

[debarshiray]

Could you please correct your Git authorship information with your full name and a real email address, unless you are worried about privacy?

I'd prefer to keep the authorship information as it is because of privacy concerns.

This is blocked on the discussion in:

• Add KONSOLE_VERSION to the list of preserved env vars #1453
• Add ZDOTDIR to the list of preserved env vars #1455

[softwarefactory-project-zuul]

Build succeeded.
https://softwarefactory-project.io/zuul/t/local/buildset/f00dac963f3241c4b76ca80f31173c03

✔️ unit-test SUCCESS in 4m 49s
✔️ unit-test-migration-path-for-coreos-toolbox SUCCESS in 3m 52s
✔️ unit-test-restricted SUCCESS in 3m 50s
✔️ system-test-fedora-rawhide SUCCESS in 32m 13s
✔️ system-test-fedora-39 SUCCESS in 33m 36s
✔️ system-test-fedora-38 SUCCESS in 34m 06s

[notfirefox]

@debarshiray DCO related issues should be resolved now.

[notfirefox]

Closing in favor of #553.