Improve Miner handling of excess items

src/main/kotlin/net/shadowfacts/phycon/network/block/terminal/TerminalBlockEntity.kt

@@ -164,8 +164,8 @@ class TerminalBlockEntity: DeviceBlockEntity(PhyBlockEntities.TERMINAL),
 		if (pendingRequests.isEmpty()) return
 
 		val finishable = pendingRequests.filter { it.isFinishable(counter) }
-		// stackLocateRequestCompleted removes the object from pendingRequests
 		finishable.forEach(::stackLocateRequestCompleted)
+		pendingRequests.removeAll(finishable)
 	}
 
 	fun addObserver() {

src/main/kotlin/net/shadowfacts/phycon/network/component/NetworkStackDispatcher.kt

@@ -75,7 +75,7 @@ fun <Self, Insertion: NetworkStackDispatcher.PendingInsertion<Insertion>> Self.f
 	if (pendingInsertions.isEmpty()) return
 
 	val finishable = pendingInsertions.filter { it.isFinishable(this) }
-	// finishInsertion removes the object from pendingInsertions
 	finishable.forEach(::finishInsertion)
+	pendingInsertions.removeAll(finishable)
 	// todo: if a timed-out insertion can't be finished, we should probably retry after some time (exponential backoff?)
 }