Move registerConfigProvider call before registerDataProvider.

`registerDataProvider` invokes `registerListener`, which calls
`onSmartspaceTargetsUpdated` and eventually
`CardPagerAdapter.setTargets`.

`CardPagerAdapter.setTargets` (and also `onSmartSpaceTargetsUpdated,
after ag/21572853) uses the config provider. We should set the config
provider to the correct one before used.

Bug: 270629477
Bug: 262630440
Test: manual
Test: passes existing tests
Change-Id: I898c012cd4b26e8b2be91ef900ccc384a4bafbbe