tests: add a fuzzer for server_process_native_file
    
    (cherry picked from commit a4aa59bae206eebb4703b291147144def5d4bb3e)
    
    Resolves: #1764560
    
    patch_name: 0263-tests-add-a-fuzzer-for-server_process_native_file.patch
    present_in_specfile: true
    location_in_specfile: 263
    squash_commits: true