修复无法正常启动 Minecraft 13w16a~13w23b 的问题 (#7193)

HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameLauncher.java

@@ -91,6 +91,12 @@ public final class HMCLGameLauncher extends DefaultLauncher {
         if (gameVersion == GameVersionNumber.unknown() || gameVersion.compareTo("1.1") < 0)
             return;
 
+        // These snapshots lack the external language resources needed for non-English locales.
+        // Selecting an unavailable language causes a NullPointerException during startup.
+        if (gameVersion instanceof GameVersionNumber.LegacySnapshot
+                && gameVersion.compareTo("13w16a") >= 0 && gameVersion.compareTo("13w23b") <= 0)
+            return;
+
         String lang = normalizedLanguageTag(locale, gameVersion);
         if (lang.isEmpty())
             return;

HMCLCore/src/main/java/org/jackhuang/hmcl/launch/DefaultLauncher.java

@@ -409,11 +409,17 @@ public class DefaultLauncher extends Launcher {
         return new Command(res, tempNativeFolder, javaNativeFolder, encoding);
     }
 
-    public Map<String, Boolean> getFeatures() {
-        return Collections.singletonMap(
-                "has_custom_resolution",
-                options.getHeight() != null && options.getHeight() != 0 && options.getWidth() != null && options.getWidth() != 0
-        );
+    /// Returns the feature flags used to evaluate conditional game arguments.
+    /// The `has_custom_resolution` flag is enabled when both dimensions are non-null and nonzero
+    /// and the game version is at least `1.6` (snapshot `13w25a`).
+    ///
+    /// @return an unmodifiable snapshot containing the custom resolution flag
+    public @Unmodifiable Map<String, Boolean> getFeatures() {
+        boolean hasCustomResolution = options.getHeight() != null && options.getHeight() != 0
+                && options.getWidth() != null && options.getWidth() != 0
+                && instance.getVersion().isAtLeast("1.6", "13w25a");
+
+        return Collections.singletonMap("has_custom_resolution", hasCustomResolution);
     }
 
     private final Map<String, Supplier<Boolean>> forbiddens = mapOf(