Use getLongVersionCode() unconditionally

Replace the SDK-version conditional for retrieving the app version code with a direct call to PackageInfo.getLongVersionCode(). This simplifies the code by removing the legacy branch that used the int versionCode and assumes compilation/targeting against API 28+ where getLongVersionCode() is available. No functional change to the returned string (versionName + "+" + versionCode).

Author: FeodorFitsner

src/serious_python_android/android/src/main/java/com/flet/serious_python_android/AndroidPlugin.java

@@ -66,12 +66,7 @@ public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
         android.content.pm.PackageManager pm = context.getPackageManager();
         android.content.pm.PackageInfo info = pm.getPackageInfo(packageName, 0);
         String versionName = info.versionName;
-        long versionCode;
-        if (android.os.Build.VERSION.SDK_INT >= 28) {
-          versionCode = info.getLongVersionCode();
-        } else {
-          versionCode = info.versionCode;
-        }
+        long versionCode = info.getLongVersionCode();
         result.success(versionName + "+" + versionCode);
       } catch (Exception e) {
         result.error("Error", e.getMessage(), null);