Camera: Specify session parameter build requirements

Session parameters are subset of the supported capture
request parameters. They are passed as part of the capture
session intitialization and only require the initial session
parameter values. Update the documentation and make clear that
additional outputs, tags etc. should not be passed when building
the session parameter capture request object.

Bug: 79225608
Test: Documentation builds
Change-Id: Id2651ea1d8dc8e3ebd9ebfca84eca2bb67694bf4