* build(fedora): fix rawhide build
* Patch math_functions by CUDA major; add CUDA-13
Switch math_functions.h patching from Fedora-version logic to CUDA-major selection in spec and build scripts. Add CUDA-13-specific patches for aarch64 and x86_64 and rename the existing patch to cuda-12. Update scripts/linux_build.sh to pick the correct cuda-{12,13}-math_functions.patch, handle missing files gracefully, and add Fedora 45 detection with CUDA 13 defaults.
* Install Fedora development-tools group directly
Replace use of the dev_tools_group variable with the explicit "development-tools" group name when running dnf group install. Also remove redundant dev_tools_group="development-tools" assignments from various Fedora/version and platform:f42 branches to simplify the distro detection logic and avoid relying on the variable.
Conn O'Griofa