runtime: Initialize native bridge in app-zygote

An app-zygote may be running PreLoad hooks, which may require native-bridged
execution if non-native jni code is involved (testAppZygoteSyscalls needs that).

Test: CtsExternalServiceTestCases
android.externalservice.cts.ExternalServiceTest
testBindExternalServiceWithZygote
Test: CtsSeccompHostTestCases
android.seccomp.cts.SeccompHostJUnit4DeviceTest
testAppZygoteSyscalls
both for Q.sdk_gphone_x86_arm.armeabi-v7a
Bug: 143143718
Bug: 146904103

Change-Id: I53f33183cc3d0bd992344441111a84f4c04533fa
3 files changed