Resolve date misaligned with clock on mouse click shade expansion

Bug: 308145768
Test: CombinedShadeHeaderConstraintsTest
Test: expanding shade via cursor click on right hand icons in status bar repros the bug 4/5 times; after the fix 0/10 tries
Flag: EXEMPT bugfix
Change-Id: I02a6a702ce2b94e6c32b713f9a7d1e9c87d45992