fix: inability to run _Sweep() multiple times (#60)

Needed to clear out the assigned event IDs whenever we initialize our
system or else we run out of event IDs.

Author: esarver

xml-handler/src/resources/sweep/MP5000Sweep.xml

@@ -1015,6 +1015,7 @@
         ---Initialize data such as the number of sweep steps per step, number of steps, and total number of points
         ---@param nodes NodesDef
         local function Init(nodes)
+            UTILITY.event_ids = {}
             local is_step = false
             local is_sweep = false
             if nodes.steps and nodes.steps[1] then