Framework: Disable native-bridge for non-zygote

Non-zygotes may not have the permissions/capabilities to run a
bridge and may abort attempts to load a bridge because of seccomp
rules. So don't tell the runtime to load a bridge when starting
a non-zygote.

Bug: 77878177
Bug: 80118963
Test: m
Test: cts-tradefed run commandAndExit cts-dev -m CtsWrapWrapDebugTestCases
Change-Id: I7894b89feec79e4bd478f649c004ad29fc46597e