meshInteraction: don't rely on window.get_page_type
meshInteraction: don't rely on window.get_page_type

We know what page we are on (and were on) from the history model,
we should not need to query the window module directly for a page
[endlessm/eos-sdk#3713]

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib