Fix init bug for: line_interaction_type=scatter (#2984)

Co-authored-by: roee yaron <[email protected]>

Author: roee2000

Diff for: .mailmap

@@ -294,4 +294,6 @@ Michael Zingale <[email protected]>
 
 Akash Kaushik <[email protected]>
 
+Roee Yaron <[email protected]>
+
 Rudraksh Nalbalwar <[email protected]>

Diff for: tardis/simulation/base.py

@@ -444,6 +444,10 @@ def iterate(self, no_of_packets, no_of_virtual_packets=0):
         logger.info(
             f"\n\tStarting iteration {(self.iterations_executed + 1):d} of {self.iterations:d}"
         )
+    
+        if self.macro_atom is None:
+            self.plasma.beta_sobolev = None
+            macro_atom_state = None
 
         opacity_state = self.opacity.legacy_solve(self.plasma)
         if self.macro_atom is not None: