Add server_configurable_flags to libandroid_runtime

We are adding input flags, which require server_configurable_flags
dependency because the input flags lib is linked statically.

Link against server_configurable_flags for libandroid_runtime.

Set flags:
adb shell setprop persist.device_config.aconfig_flags.input.com.android.input.flags.enable_inbound_event_verification true
adb shell setprop persist.device_config.aconfig_flags.input.com.android.input.flags.enable_outbound_event_verification true

Bug: 271455682
Test: m libandroid_runtime
Change-Id: I57da8ae789d3712bb15f31f2a2abf62fe31a549a