Remove references to support_tree_enable in 3rd-party printers

CURA-6711

resources/definitions/creality_base.def.json

@@ -243,7 +243,7 @@
 
         "support_angle": { "value": "math.floor(math.degrees(math.atan(line_width/2.0/layer_height)))" },
         "support_pattern": { "value": "'zigzag'" },
-        "support_infill_rate": { "value": "0 if support_tree_enable else 20" },
+        "support_infill_rate": { "value": "0 if support_enable and support_structure == 'tree' else 20" },
         "support_use_towers": { "value": false },
         "support_xy_distance": { "value": "wall_line_width_0 * 2" },
         "support_xy_distance_overhang": { "value": "wall_line_width_0" },

resources/definitions/flyingbear_base.def.json

@@ -102,7 +102,7 @@
 
 		"support_angle": 			{ "value": "math.floor(math.degrees(math.atan(line_width/2.0/layer_height)))" },
 		"support_pattern": 			{ "value": "'zigzag'" },
-		"support_infill_rate": 			{ "value": "0 if support_tree_enable else 20" },
+		"support_infill_rate": 			{ "value": "0 if support_enable and support_structure == 'tree' else 20" },
 		"support_z_distance": 			{ "value": "layer_height if layer_height >= 0.16 else layer_height*2" },
 		"support_xy_distance": 			{ "value": "wall_line_width_0 * 2" },
 		"support_xy_overrides_z": 		{ "value": "'xy_overrides_z'" },

resources/definitions/rigid3d_base.def.json

@@ -248,7 +248,7 @@
 
         "support_angle": { "value": "math.floor(math.degrees(math.atan(line_width/2.0/layer_height)))" },
         "support_pattern": { "value": "'zigzag'" },
-        "support_infill_rate": { "value": "0 if support_tree_enable else 20" },
+        "support_infill_rate": { "value": "0 if support_enable and support_structure == 'tree' else 20" },
         "support_use_towers": { "value": false },
         "support_xy_distance": { "value": "wall_line_width_0 * 2" },
         "support_xy_distance_overhang": { "value": "wall_line_width_0" },

resources/definitions/tronxy_x.def.json

@@ -143,7 +143,7 @@
 
         "support_angle": { "value": "math.floor(math.degrees(math.atan(line_width/2.0/layer_height)))" },
         "support_pattern": { "value": "'zigzag'" },
-        "support_infill_rate": { "value": "0 if support_tree_enable else 20" },
+        "support_infill_rate": { "value": "0 if support_enable and support_structure == 'tree' else 20" },
         "support_use_towers": { "value": false },
         "support_xy_distance": { "value": "wall_line_width_0 * 2" },
         "support_xy_distance_overhang": { "value": "wall_line_width_0" },