fix(jqLite): data should store data only on Element and Document nodes

This is what jQuery does by default: https://github.com/jquery/jquery/blob/c18c6229c84cd2f0c9fe9f6fc3749e2c93608cc7/src/data/accepts.js#L16

We don't need to set data on text/comment nodes internally and if we don't
allow setting data on these nodes, we don't need to worry about cleaning
it up.

BREAKING CHANGE: previously it was possible to set jqLite data on Text/Comment
nodes, but now that is allowed only on Element and Document nodes just like in
jQuery. We don't expect that app code actually depends on this accidental feature.