fix: preserve trex default sample duration #174

Job	Run time
Settings / settings	3s
Lint / Lint	15s
Official Docker image / Build	41s
Build docs / Build docs	28s
Test Linux distros / Matrix configuration	6s
Build and test / Matrix configuration	6s
Build and test / linux x64 Debug static	11m 10s
Build and test / linux x64 Debug shared	11m 39s
Build and test / linux x64 Release static	11m 41s
Build and test / linux x64 Release shared	11m 48s
Build and test / osx x64 Debug static	10m 50s
Test Linux distros / Alpine	13m 8s
Build and test / osx x64 Debug shared	6m 43s
Test Linux distros / ArchLinux	12m 8s
Build and test / osx x64 Release static	13m 57s
Test Linux distros / CentOS	10m 42s
Build and test / osx x64 Release shared	7m 12s
Test Linux distros / Debian	10m 43s
Build and test / osx arm64 Debug static	7m 50s
Test Linux distros / Fedora	11m 8s
Build and test / osx arm64 Debug shared	4m 14s
Test Linux distros / OpenSUSE	11m 23s
Build and test / osx arm64 Release static	7m 43s
Test Linux distros / Ubuntu	12m 16s
Build and test / osx arm64 Release shared	4m 42s
	3h 12m 36s

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