Add KeyboarDockingIndicationViewModel lint exception

New ShadeDisplayAwareContextChecker linter wasn't checked against a recent change to KeyboarDockingIndicationViewModel, so need  to add lint-baseline.xml to stop build from failing. (Future CL will also exclude @GlobalConfig from linter errors)

Bug: 378016985
Test: running linter
Flag: EXEMPT lint only
Change-Id: I679c32fc7720e00f44e386bcf000a6f60645b00d