uridecodebin3: Activate suburi playback item

The suburi playback item has to be activated after the main playback item so
that playsink can properly enable text rendering.

Fixes #451
21 jobs for uridecodebin3-suburi in 70 minutes and 4 seconds (queued for 3 minutes and 41 seconds)
latest
Status Job ID Name Coverage
  Preparation
passed #496762
gst indent

00:00:16

passed #496761
manifest

00:01:03

 
  Build
passed #496768
build cerbero android universal

00:10:39

passed #496769
build cerbero cross win32

00:05:37

passed #496770
build cerbero cross win64

00:07:03

passed #496767
build cerbero fedora x86_64

00:07:09

manual #496772
gst-ios-12.2 allowed to fail manual
build cerbero ios universal
passed #496771
gst-macos-10.14
build cerbero macos x86_64

00:08:44

passed #496763
build fedora x86_64

00:06:02

passed #496764
build nodebug fedora x86_64

00:06:05

passed #496765
build static fedora x86_64

00:12:54

passed #496766
build static nodebug fedora x86_64

00:12:33

 
  Test
passed #496773
check fedora

00:04:39

passed #496774
integration testsuites fedora

00:15:21

passed #496778
valgrind bad

00:09:53

passed #496775
valgrind base

00:11:10

passed #496779
valgrind ges

00:08:45

passed #496776
valgrind good

00:09:10

passed #496777
valgrind ugly

00:02:13

 
  Integrate
passed #496780
android universal examples

00:08:25

passed #496781
documentation

00:05:51