[Build]: Adapt build and build instructions on Rocky 9.8 as it dropped mesa-libOSMesa{,-devel} from the CRB repo

[Build]: Adapt build and build instructions on Rocky 9.8 as it dropped mesa-libOSMesa{,-devel} from the CRB repo As part of the Open RV build, we sudo dnf install mesa-libOSMesa mesa-libOSMesa-devel but these packages are no longer available starting with Rocky 9.8. https://github.com/AcademySoftwareFoundation/OpenRV/blob/main/docs/build_system/config_linux_rocky89.md#12-install-other-dependencies The mission is to figure out alternatives for the build and to document accordingly. Note that we temporarily fixed the github action failures by pinning the version of Rocky Linux to 9.7 for the build: https://github.com/AcademySoftwareFoundation/OpenRV/commit/3e22a8f51004ec696e3268381a6e5218498f8b96 Any volunteer to tackle this task would be really appreciated !