Sharesheet - Adjust timeouts and logic for direct share

Improve direct share loading by:
1. Do not issue redundant service calls within the watchdog timeout
period
2. Set a min and max watchdog timeout period, and if all services
return early, then informt the user we are done to so that they don't
have to wait until the max timeout period.
3. Be more specific on package changes. Resolver requires any change
to trigger a refresh, but chooser only needs to know about top level
package changes.

Bug: 134416594
Test: Manual
Change-Id: I075fd5b6f64c25637fd7ba7aa6b163dca81371a8