reducers: Make LINK_CLICK finalize but not close
... the interaction.
Following on from Iccba3c4c, LINK_CLICK shouldn't be considered the end
of an interaction because the link or preview can still be abandoned by
the user. Unlike ABANDON_END and LINK_DWELL, therefore, LINK_CLICK
musn't destroy the interaction but indicate that no more events should
be enqueued for the interaction.
More concretely, if the user has clicked the link or the preview, then
a "dwelledButAbandoned" or "dismissed" event shouldn't be logged.
- Distinguish between "finalizing" and "closing" an interaction, where the latter is the current behavior of ABANDON_END, LINK_DWELL, and LINK_CLICK, in the eventLogging reducer and associated tests.
- If the interaction is finalized, then either the "dwelledButAbandoned" or "dismissed" events shouldn't be logged.