Resolve all browsers even if there is a default browser.

PackageManager.queryIntentActivities() handles browser intent
differently when there is a default browser, and only returns the
default browser. Previous code for querying all the browsers all
passed in the PackageManager.MATCH_ALL flag and filtered the result
manually, so we move that logic into RoleBehavior.

Bug: 110557011
Test: build
Change-Id: I928f13d27aca64d49f625dd1ffbd3262b42a06cd