Include error logging for investigation on pushDynamicShortcut

Include additional logs for further investigation on reported issue
where calling pushDynamicShortcut in a loop resulted in having more
shortcuts that occupies system memory then allowed by
ShortcutManager#getMaxShortcutCountPerActivity.

Bug: 218259921, 218545269
Test: manual
Change-Id: I268831784ed31f60f3b793c99434178c6e39861b