packagekit: Replace `wait_present` with `wait_visible` in tests
packagekit: Replace `wait_present` with `wait_visible` in tests

mvollmer/cockpit,cockpit-project/cockpit,deryni/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,martinpitt/cockpit,martinpitt/cockpit,deryni/cockpit,mvollmer/cockpit,garrett/cockpit,garrett/cockpit,garrett/cockpit,garrett/cockpit,deryni/cockpit,deryni/cockpit,deryni/cockpit,mvollmer/cockpit,mvollmer/cockpit,garrett/cockpit,martinpitt/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,mvollmer/cockpit,deryni/cockpit,cockpit-project/cockpit,deryni/cockpit