Fix communal grid breakpoint to have 2 rows on phones

Many phones have a screen height larger than 900dp. Increasing the
threshold to 1000dp temporarily for trunkfood while we get more specific
specs from UX.

Fixes: 385765793
Test: mp droid and verified grid has 2 rows on pixel 8a
Flag: com.android.systemui.communal_responsive_grid
Change-Id: I1a23a25a710d31419a055604829f3ef72ee5e50b