fix nondeterminism in tesseract_main.cc

by default, tesseract should have deterministic behavior on the same data. This was broken accidentally through use of a hardware random seed by default for the det order generation. here we fix it to a particular random seed by default.

Author: noajshu

src/tesseract_main.cc

@@ -326,7 +326,7 @@ int main(int argc, char* argv[]) {
           "Seed used when initializing the random detector traversal "
           "orderings.")
       .metavar("N")
-      .default_value(static_cast<uint64_t>(std::random_device()()))
+      .default_value(static_cast<uint64_t>(518278944))
       .store_into(args.det_order_seed);
   program.add_argument("--sample-num-shots")
       .help(
@@ -627,4 +627,4 @@ int main(int argc, char* argv[]) {
     std::cout << " total_time_seconds = " << total_time_seconds;
     std::cout << std::endl;
   }
-}
+}