Load app content descriptions for Go recents.

Recents Go with icons will use the app's title description as the app
label, so we need this to actually load when we load the task's content
even if accessibility is disabled. This CL puts this behind a static
flag only set to true in recents Go code.

Bug: 114136250
Test: Log that titles/labels are appropriately fetched
Change-Id: I4fe7d8758b3141695a82c0677cec97686c977934