Only add deps on java_binary's jni_libs on host

The jni_libs property of java_binary is documented to only install
the jni libraries on host. However, it was adding installable
deptag deps on those libraries, even if they were for device. This
caused soong to emit installation rules for the jni libraries, causing
them to be installed to the staging directory, but not emitting
proper information to make, so they wouldn't be included on the built
partitions.

Only install them if the module is built for host, so that they don't
erroneously appear in the staging directory.

Bug: 344695913
Test: Presubmits
Change-Id: Ic40b4fc6d7dbd51c03b08e28037be5428db49c33