fix: nullPointerException in GroupView when drawing bitmap on Android 10 and older (#2694)

# Summary

Open Issue: [isRecycled() on a null object
reference](#2609)

This PR addresses a sporadic crash that occurs specifically on Android
10 (API 29) and older when rendering SVGs.

* Although the code already handles the mLayerBitmap being null in an
earlier section, the bitmap can still become null on Android 10 and
below due to memory pressure or race conditions, ultimately leading to a
crash.

* Differences in how Bitmap memory handled and Canvas drawing operations
are handled in these versions, make them more susceptible to this
issue.)
[Reference: Android Bitmap Memory
Management](https://developer.android.com/topic/performance/graphics/manage-memory#recycle)

## Test Plan

Unfortunately, it is bit hard to recreate this behaviour and it is very
sporadic.
I have patched this change in my app, and it has produced positive
results. both for me and for some other users as well.

(#2609 (comment))

### What's required for testing (prerequisites)?
-

### What are the steps to reproduce (after prerequisites)?
-

## Compatibility

| OS      | Implemented |
| ------- | :---------: |
| iOS     |     ❌      |
| MacOS   |     ❌      |
| Android |     ✅      |
| Web     |     ❌      |

Author: OmalPerera

android/src/main/java/com/horcrux/svg/GroupView.java

@@ -165,7 +165,9 @@ void drawGroup(final Canvas canvas, final Paint paint, final float opacity) {
       int saveCount = canvas.save();
       canvas.setMatrix(null);
       mLayerPaint.setAlpha((int) (mOpacity * 255));
-      canvas.drawBitmap(mLayerBitmap, 0, 0, mLayerPaint);
+      if (mLayerBitmap != null) {
+        canvas.drawBitmap(mLayerBitmap, 0, 0, mLayerPaint);
+      }
       canvas.restoreToCount(saveCount);
     }
     this.setClientRect(groupRect);