Improve bounding boxes used by railviz #247

Job	Run time
macos (macos-x86_64, On)	5m 4s
msvc (Debug)	4m 37s
macos (macos-arm64)	5m 6s
linux (linux-amd64-release, linux-amd64)	1m 7s
msvc (Release)	4m 33s
formatting	43s
linux (clang-tidy)	2m 58s
linux (linux-sanitizer)	1m 58s
openapi-validate	17s
linux (linux-debug, valgrind --suppressions=tools/suppress.txt --leak-check=full --error-exitcode=1)	4m 20s
ui	33s
docker	12s
	31m 28s

Provide feedback