mpegtsmux: Change unit test to not generate zero-sized buffers ever

5 jobs for mpegtsmux-zero-sized-buffers in 10 minutes and 5 seconds (queued for 2 minutes and 2 seconds)
Status Job ID Name Coverage
  Preparation
passed gst indent #60009

00:00:34

passed manifest #60008

00:00:19

 
  Build
passed build fedora x86_64 #60010

00:02:41

 
  Full Builds
passed build android arm64 api28 #60011

00:02:31

passed build cerbero fedora x86_64 #60012

00:06:29