fix: Build issues on Linux due to unused parameter

lib/libimhex/source/helpers/default_paths.cpp

@@ -79,6 +79,7 @@ namespace hex::paths {
         #elif defined(OS_MACOS)
             return getDataPaths(includeSystemFolders);
         #elif defined(OS_LINUX) || defined(OS_WEB)
+            hex::unused(includeSystemFolders);
             return {xdg::ConfigHomeDir() / "imhex"};
         #endif
     }