STS test for Android Security CVE-2021-0485

Test: sts-tradefed run sts-engbuild-no-spl-lock -m CtsWindowManagerDeviceTestCases -t android.server.wm.PinnedStackTests#testEnterPipWithTinyMinimalSize
Bug: 182917774
Bug: 174302616
Change-Id: I58b4ac0d778dfbca504e85fd3a2cf2bb542d68e0
21 files changed