Update SA-5 Generator for factions without the TinShield

- added an EarlySA5Generator with the P-19 FlatFace SR which is supported by all factions
- allows factions without access to the TinShield to have a working SA-5

cherry-pick from f526681f

gen/sam/sam_group_generator.py

@@ -49,7 +49,7 @@ from gen.sam.sam_sa17 import SA17Generator
 from gen.sam.sam_sa19 import SA19Generator
 from gen.sam.sam_sa2 import SA2Generator
 from gen.sam.sam_sa3 import SA3Generator
-from gen.sam.sam_sa5 import SA5Generator
+from gen.sam.sam_sa5 import SA5Generator, SA5FlatFaceGenerator
 from gen.sam.sam_sa6 import SA6Generator
 from gen.sam.sam_sa8 import SA8Generator
 from gen.sam.sam_sa9 import SA9Generator
@@ -79,6 +79,7 @@ SAM_MAP: Dict[str, Type[AirDefenseGroupGenerator]] = {
     "SA2Generator": SA2Generator,
     "SA3Generator": SA3Generator,
     "SA5Generator": SA5Generator,
+    "SA5FlatFaceGenerator": SA5FlatFaceGenerator,
     "SA6Generator": SA6Generator,
     "SA8Generator": SA8Generator,
     "SA9Generator": SA9Generator,

gen/sam/sam_sa5.py

@@ -1,5 +1,10 @@
+from typing import Type
+
+from dcs.unittype import VehicleType
 from dcs.vehicles import AirDefence, Unarmed
 
+from game import Game
+from game.theater import SamGroundObject
 from gen.sam.airdefensegroupgenerator import (
     AirDefenseRange,
     AirDefenseGroupGenerator,
@@ -8,15 +13,18 @@ from gen.sam.airdefensegroupgenerator import (
 
 class SA5Generator(AirDefenseGroupGenerator):
     """
-    This generate a SA-5 group
+    This generate a SA-5 group using the TinShield SR
     """
 
     name = "SA-5/S-200 Site"
 
-    def generate(self) -> None:
+    def __init__(self, game: Game, ground_object: SamGroundObject):
+        super().__init__(game, ground_object)
+        self.sr: Type[VehicleType] = AirDefence.RLS_19J6
 
+    def generate(self) -> None:
         self.add_unit(
-            AirDefence.RLS_19J6,
+            self.sr,
             "SR",
             self.position.x,
             self.position.y,
@@ -54,3 +62,14 @@ class SA5Generator(AirDefenseGroupGenerator):
     @classmethod
     def range(cls) -> AirDefenseRange:
         return AirDefenseRange.Long
+
+
+# TODO Replace this legacy handling once the Generators can be faction sensitive #1903
+class SA5FlatFaceGenerator(SA5Generator):
+    """
+    This generate a SA-5 group using the P-19 FlatFace SR
+    """
+
+    def __init__(self, game: Game, ground_object: SamGroundObject):
+        super().__init__(game, ground_object)
+        self.sr: Type[VehicleType] = AirDefence.P_19_s_125_sr