Promote or demote stable and flaky flicker tests

Weekly CL updating the status of flicker tests.

Promote:
- stable postsubmit to presubmit
- stable flaky to postsubmit

Demote:
- unstable presubmit to flaky
- unstable postsubmit to flaky

Test: atest FlickerLibTest FlickerTests WMShellFlickerTests
Bug: 190189685
Bug: 141361128
Change-Id: I8988b9f9e6d92d26b169da91ce98b359bf05336f