Running to system wall in order to die and "deny" interaction to another player is disgusting way of avoiding the main thing that Discovery offers - multiplayer. It should be a against written rules.
Just edit 5.3 rule (https://i.imgur.com/BYc2A4S.png) to 5.3 - Intentionally self-killing, team-killing, planet-diving, sun-diving or wall-running during interactions.
There, you cover more stuff with one rule that is already pretty much established on combat front.
If the fleeing ship makes a veeery slight turn (100k+ wide in turning radius) then it can eventually turn back to the center of the system and land without the pursuer catching up. So it's not a waste of time and it's not a death either. If you want to forbid this you'll have to forbid running from danger in general. Good luck!
I didn’t even know there was a certain point in a system where you’d die- I thought it just went into nothing when you’re chasing down an opponent where your map cursor is in the red…