* wip, added PreviewTrade and now amending request arg type

* updates

* update logic to progress to swap review screen

* add token tax info to preview trades

* add loading component

* add feature flag and fix analytics and perf stuff

* update debounce amount

* add latencyMs measure

* change types

* add inline comments

* actually pass in feature flags

* dep array

* fix snapshot and unit tests

* fix unit tests

* update font color for loading text

* remove all chains feature flag

* remove from feature flag modal

* dont flicker review modal when allowance is loading

* remove comment

* add snapshot tests

* triple equals

* add comment

* change cast