Fixing constraint of statusIcons in large screen shade header

There were two "End" constraints on statusIcons. This mistake didn't show symptoms in LTR layout but broke RTL layout where carrier_group and statusIcons overlapped elements

Fixes: 279552279
Test: CombinedShadeHeaderConstraintsTest
Test: manually verifying large screen header in RTL
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:8c1304f1ef06415226228024100e94c88891116b)
Merged-In: I26c76ce8c35e91a0eaeae66f30823cc32ceb1221
Change-Id: I26c76ce8c35e91a0eaeae66f30823cc32ceb1221