meson: enable tests for orc code

8 jobs for meson-orc-tests in 22 minutes and 1 second (queued for 2 seconds)
Status Job ID Name Coverage
  Preparation
passed #82086
gst indent

00:00:53

passed #82085
manifest

00:00:45

 
  Build
passed #82087
build fedora x86_64

00:07:52

 
  Test
passed #82088
check fedora

00:03:25

 
  Full Builds
passed #82089
build android arm64 api28

00:04:55

passed #82091
build cerbero cross win32

00:09:45

passed #82092
build cerbero cross win64

00:07:39

passed #82090
build cerbero fedora x86_64

00:08:10