fix: duplicate representation id for TTML when forced ordering is on #529

Job	Run time
Lint / Lint	12s
Settings / settings	2s
Build docs / Build docs	26s
Test Linux distros / Matrix configuration	4s
Official Docker image / Build	11m 57s
Build and test / Matrix configuration	5s
Build and test / linux x64 Debug static	9m 24s
Build and test / linux x64 Debug shared	9m 21s
Build and test / linux x64 Release static	12m 54s
Build and test / linux x64 Release shared	10m 36s
Build and test / osx x64 Debug static	13m 33s
Build and test / osx x64 Debug shared	14m 5s
Build and test / osx x64 Release static	12m 13s
Build and test / osx x64 Release shared	15m 23s
Test Linux distros / Alpine	11m 53s
Build and test / osx arm64 Debug static	6m 3s
Test Linux distros / ArchLinux	12m 7s
Build and test / osx arm64 Debug shared	6m 47s
Test Linux distros / CentOS	11m 28s
Build and test / osx arm64 Release static	6m 50s
Test Linux distros / Debian	11m 19s
Build and test / osx arm64 Release shared	6m 49s
Test Linux distros / Fedora	10m 19s
Build and test / win x64 Debug static	14m 51s
Test Linux distros / OpenSUSE	10m 37s
Build and test / win x64 Debug shared	14m 40s
Test Linux distros / Ubuntu	9m 58s
Build and test / win x64 Release static	17m 59s
Build and test / win x64 Release shared	17m 21s
Build and test / linux arm64 Debug static	10m 40s
Build and test / linux arm64 Debug shared	10m 33s
Build and test / linux arm64 Release static	11m 54s
Build and test / linux arm64 Release shared	10m 25s
	5h 22m 48s

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