Fix throwing error on conflicts

lib/mod_list.dart

@@ -190,11 +190,11 @@ class ModList {
 
     // Only check each pair once
     for (final modId in activeModIds) {
-      Mod mod = mods[modId]!;
+      final mod = mods[modId]!;
 
       for (final incompId in mod.incompatibilities) {
         // Only process if other mod is active and we haven't checked this pair yet
-        if (activeMods.containsKey(incompId) && modId.compareTo(incompId) < 0) {
+        if (activeMods.containsKey(incompId)) {
           conflicts.add([modId, incompId]);
         }
       }
@@ -254,7 +254,7 @@ class ModList {
     }
 
     // Visit all nodes
-    for (Mod mod in mods.values) {
+    for (final mod in mods.values) {
       if (!mod.visited) {
         visit(mod);
       }

test/mod_list_test.dart

@@ -31,36 +31,28 @@ void main() {
       id: 'harmony',
       loadBefore: ["ludeon.rimworld"],
       size: 47,
-      enabled: true,
     ),
     'ludeon.rimworld': dummyMod.copyWith(
       name: 'RimWorld',
       id: 'ludeon.rimworld',
-      enabled: true,
       isBaseGame: true,
     ),
     'ludeon.rimworld.anomaly': dummyMod.copyWith(
       name: 'RimWorld Anomaly',
       id: 'ludeon.rimworld.anomaly',
-      enabled: true,
       isExpansion: true,
     ),
     'disabledDummy': dummyMod.copyWith(
       name: 'Disabled Dummy',
       id: 'disabledDummy',
-      enabled: false,
     ),
-    'yuuuge': dummyMod.copyWith(
-      name: 'Yuuuge',
-      id: 'yuuuge',
-      enabled: true,
-      size: 1000000,
-    ),
-    'smol': dummyMod.copyWith(
-      name: 'Smol',
-      id: 'smol',
-      enabled: true,
+    'yuuuge': dummyMod.copyWith(name: 'Yuuuge', id: 'yuuuge', size: 1000000),
+    'smol': dummyMod.copyWith(name: 'Smol', id: 'smol', size: 1),
+    'incompatible': dummyMod.copyWith(
+      name: 'Incompatible',
+      id: 'incompatible',
       size: 1,
+      incompatibilities: ['harmony'],
     ),
   };
 
@@ -70,6 +62,7 @@ void main() {
     dummyList.setEnabled(mod, true);
   }
   dummyList.setEnabled('disabledDummy', false);
+  dummyList.setEnabled('incompatible', false);
   final sortedMods = dummyList.generateLoadOrder();
 
   group('Test sorting', () {
@@ -92,5 +85,9 @@ void main() {
       final yuuugeIndex = sortedMods.indexOf('yuuuge');
       expect(yuuugeIndex, lessThan(smolIndex));
     });
+    dummyList.setEnabled('incompatible', true);
+    test('Error generating load order with incompatible mods', () {
+      expect(() => dummyList.generateLoadOrder(), throwsException);
+    });
   });
 }