Add LOCAL_SDK_VERSION in noto-emoji-compat-java

The noto-emoji-compat-java is using only public API. However
it is defined java:platform which can use internal API, since
it is not defined LOCAL_SDK_VERSION.
So, LOCAL_SDK_VERSION := current is added in noto-emoji-compat-java,
because it can be turn into errors when link type check becomes
more strict.

Bug: 69899800
Test: mma -j under devicesidelib dir
Change-Id: Ib3d4a8cf24d29ce496288cd795a065c36a161f4e
1 file changed