fix(android): prevent random, missing tiles if caching locally (#4598)

Before this change, the else if statement on 216 would never run since
the condition (`image == null && !this.offlineMode`) matches the
previous if statement. Making it an independent if statement fixes
the issue.

Fixes: #4477

android/src/main/java/com/rnmaps/maps/MapTileProvider.java

@@ -213,7 +213,9 @@ byte[] getTileImage(int x, int y, int zoom) {
 			} catch (Exception e) {
 			  e.printStackTrace();
 			}
-		} else if (image == null && !this.offlineMode) {
+		}
+
+		if (image == null && !this.offlineMode) {
 			Log.d("urlTile", "Normal fetch");
 			image = fetchTile(x, y, zoom);
 			if (image == null) {