GoogleTest: Preserve spaces in test parameters

Evgeniy Shcherbinarequested to merge
ixsci/cmake:GoogleTest-discover-spaces-in-parameters into master

Before the fix the gtest_discover_tests() function would strip the user data in test parameters (everything to the right of GetParam()) of spaces. Now the parameters aren't altered in any way.

Fixes: #23058 (closed)
Backport: release

Edited by Brad King

Merge request reports