[Large screen] Set SplitPairRule for DeepLinkHomepageActivity

Setting app should set SplitPairRule for all the alias of
SettingsHomepageActivity to handle all the different
launch cases.

Bug: 204156913
Bug: 204399375
Test: manual
      1. Launch settings in unfold screen
      2. Fold screen
      3. Launch wallpaper app
      4. Unfold screen
Change-Id: I3ad33a750ef19390bc8dc3fb4dc6f1c80630d57f