fix(comps): Remove gnome-control-center, overlay mutter

[christopherco]

gnome-control-center is a GNOME desktop settings UI not needed for a cloud/server distro. It also cannot build due to a gtk4 version mismatch (4.20.3 vs required 4.20.4). Remove it to avoid supplying desktop components that have no use in Azure Linux.

Overlay mutter to drop the control-center-filesystem Requires (only provided by gnome-control-center's filesystem subpackage — no other package supplies it) and remove the keybinding files that only gnome-control-center would consume.

Dependency impact

graph TD
    GCC["gnome-control-center<br/><i>removed — desktop UI,<br/>can't build (gtk4 mismatch)</i>"]
    GCCFS["control-center-filesystem<br/><i>subpackage of gnome-control-center</i>"]
    GCC -->|"only provider"| GCCFS

    MUTTER["mutter"]
    MUTTER -->|"Requires<br/>(removed via overlay)"| GCCFS
    MUTTER -->|"keybinding XMLs<br/>(removed via overlay)"| GCCFS

    GS["gnome-shell<br/><i>already removed</i>"]
    GSESS["gnome-session<br/><i>already removed</i>"]

    GS -.->|"was only other<br/>Requires"| GCC
    GSESS -.->|"was only other<br/>Requires"| GCCFS

    style GCC fill:#ffcccc,stroke:#cc0000
    style MUTTER fill:#cce5ff,stroke:#0066cc
    style GCCFS fill:#ffcccc,stroke:#cc0000
    style GS fill:#e6e6e6,stroke:#999
    style GSESS fill:#e6e6e6,stroke:#999

Loading

• Red: Removed. control-center-filesystem is only provided by gnome-control-center — nothing else supplies it.
• Blue: mutter is the only remaining consumer — overlayed to drop the Requires and keybinding files.
• Gray: gnome-shell and gnome-session were the only other consumers, already removed in prior commits.