Avoid static protolog dep in WindowManager-Shell

This lib is already bundled in the framework and present in the
bootclasspath. Avoid statically linking into (bundled app) clients
to avoid compile-time and runtime class definition collisions.

Test: m + presubmit
Bug: 215530220
Bug: 222468116
Change-Id: I0db5d7450a2d3f467f08c6fffb3441ee4d16fb0a