Mark non-running task as minimized.

When we are trying to minimize a non-running task, mark it as minimized
instead of returning to prevent it from being end up in bad state of
non-minimized and non-expanded.

Test: Manual
Bug: 377443424
Flag: EXEMPT Bugfix
Change-Id: I326d0084267c85bb09ac3fd87a92ffab90a89e4b