Use byte count rather than string length for NMS component name check Bug: 505067993 Test: atest NotificationManagerServiceTest Flag: EXEMPT BUGFIX (cherry picked from commit 577543980a006ea56dd3fbbb3e7e4d28bb0db4d8) Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:a6fc2d471a7529428330e9fbf2de5866fd449aef Merged-In: Ie1bf232340770e1237f80177bb0b86eabeda3635 Change-Id: Ie1bf232340770e1237f80177bb0b86eabeda3635