Ensure main content's clickable state is set correctly.

Previously, when resetting the view state, we just called
setOnClickListener which does not reset clickable state if the click
listener is set to null. As a result, the main content was set to
clickable even though there's no click action.

This fixes the issue by properly calling updateContentClickListener
which also sets the view to not clickable when there's no listener.

Bug: 421781455
Bug: 421783324
Bug: 421783245
Fixes: 421781455
Fixes: 421783324
Fixes: 421783245
Flag: EXEMPT bugfix
Test: atest MediaOutputAdapterTest
Change-Id: I1cad7275688d94cf118c04f6dd5bfafcb7c7d31c