Some qt6 component ptest packages are not correctly installed on images built using Poky

$ git clone --branch mickledore git://git.yoctoproject.org/poky
$ git clone --branch 6.5.1 git://code.qt.io/yocto/meta-qt6.git  # Change --branch option to 6.6.0 to reproduce the same issue for 6.6.0
$ source poky/oe-init-build-env ./build
$ bitbake-layers layerindex-fetch -f .. meta-oe meta-python
$ bitbake-layers add-layer ../meta-qt6

DISTRO_FEATURES:append = " ptest"
EXTRA_IMAGE_FEATURES += " ptest-pkgs"
CORE_IMAGE_EXTRA_INSTALL += " qtcoap qtdeviceutilities qtmqtt qtquick3dphysics qtquickdesigner-components qttools qttranslations"

$ bitbake core-image-minimal

# ptest-runner qtcoap -t 3600 START: ptest-runner
2023-12-07T17:26
BEGIN: /usr/lib/qtcoap/ptest
cat: tst_list: No such file or directory
DURATION: 0
END: /usr/lib/qtcoap/ptest
2023-12-07T17:26
STOP: ptest-runner
TOTAL: 1 FAIL: 0

# ls /usr/lib/qtcoap/ptest/
run-ptest  tests

# ptest-runner qtdeviceutilities -t 3600
qtdeviceutilities ptest isn't available.

# ls /usr/lib/qtdeviceutilities/ptest/

# ptest-runner qtmqtt -t 3600 START: ptest-runner
2023-12-07T17:28
BEGIN: /usr/lib/qtmqtt/ptest
cat: tst_list: No such file or directory
DURATION: 0
END: /usr/lib/qtmqtt/ptest
2023-12-07T17:28
STOP: ptest-runner
TOTAL: 1 FAIL: 0

# ls /usr/lib/qtmqtt/ptest/
run-ptest  tests

# ptest-runner qtquick3dphysics -t 3600 START: ptest-runner
2023-12-07T17:28
BEGIN: /usr/lib/qtquick3dphysics/ptest
cat: tst_list: No such file or directory
DURATION: 0
END: /usr/lib/qtquick3dphysics/ptest
2023-12-07T17:28
STOP: ptest-runner
TOTAL: 1 FAIL: 0

# ls /usr/lib/qtquick3dphysics/ptest/
run-ptest  tests

# ptest-runner qtquickdesigner-components -t 3600
START: ptest-runner
2023-12-07T17:29
BEGIN: /usr/lib/qtquickdesigner-components/ptest
cat: tst_list: No such file or directory
DURATION: 0
END: /usr/lib/qtquickdesigner-components/ptest
2023-12-07T17:29
STOP: ptest-runner
TOTAL: 1 FAIL: 0

# ls /usr/lib/qtquickdesigner-components/ptest/
run-ptest

# ptest-runner qttools -t 3600
START: ptest-runner
2023-12-07T17:29
BEGIN: /usr/lib/qttools/ptest
cat: tst_list: No such file or directory
DURATION: 0
END: /usr/lib/qttools/ptest
2023-12-07T17:29
STOP: ptest-runner
TOTAL: 1 FAIL: 0

# ls /usr/lib/qttools/ptest/
run-ptest  tests

# ptest-runner qttranslations -t 3600
START: ptest-runner
2023-12-07T17:30
BEGIN: /usr/lib/qttranslations/ptest
cat: tst_list: No such file or directory
DURATION: 0
END: /usr/lib/qttranslations/ptest
2023-12-07T17:30
STOP: ptest-runner
TOTAL: 1 FAIL: 0

# ls /usr/lib/qttranslations/ptest/
run-ptest