XWIKI-15922: Migrate platform-office tests to use docker test

...orm-office-test/xwiki-platform-office-test-docker/pom.xml

...m-office-test-docker/src/test/it/ui/OfficeImporterIT.java

...latform-office-test-docker/src/test/resources/ToSplit.odt

...-test-docker/src/test/resources/msoffice.97-2003/Test.doc

...-test-docker/src/test/resources/msoffice.97-2003/Test.ppt

...-test-docker/src/test/resources/msoffice.97-2003/Test.xls

...ffice-test-docker/src/test/resources/ooffice.3.0/Test.odp

...ffice-test-docker/src/test/resources/ooffice.3.0/Test.ods

...ffice-test-docker/src/test/resources/ooffice.3.0/Test.odt

...rc/test/it/org/xwiki/officeimporter/test/ui/AllTests.java

.../java/org/xwiki/test/docker/junit5/TestConfiguration.java

...docker/junit5/servletEngine/ServletContainerExecutor.java