fix: allow only decodeWidth or decodeHeight to be specified

Author: farfromrefug

packages/image/platforms/android/java/com/nativescript/image/DraweeView.java

@@ -288,8 +288,8 @@ public void setUri(android.net.Uri uri, String jsonOptions, com.facebook.drawee.
             int decodeWidth = object.optInt("decodeWidth");
             int decodeHeight = object.optInt("decodeHeight");
 
-            if (decodeWidth > 0 && decodeHeight > 0) {
-                requestBuilder = requestBuilder.setResizeOptions(new com.facebook.imagepipeline.common.ResizeOptions(decodeWidth, decodeHeight));
+            if (decodeWidth > 0 || decodeHeight > 0) {
+                requestBuilder = requestBuilder.setResizeOptions(new com.facebook.imagepipeline.common.ResizeOptions(decodeWidth > 0 ? decodeWidth : decodeHeight, decodeHeight  > 0 ? decodeHeight : decodeWidth));
             }
             int blurRadius = object.optInt("blurRadius", 0);
             if (blurRadius > 0) {

src/image/index.ios.ts

@@ -454,7 +454,7 @@ export class Img extends ImageBase {
                 }
                 if (this.decodeWidth || this.decodeHeight) {
                     //@ts-ignore
-                    transformers.push(NSImageDecodeSizeTransformer.transformerWithDecodeWidthDecodeHeight(this.decodeWidth, this.decodeHeight));
+                    transformers.push(NSImageDecodeSizeTransformer.transformerWithDecodeWidthDecodeHeight(this.decodeWidth || this.decodeHeight, this.decodeHeight || this.decodeWidth));
                 }
                 if (this.tintColor) {
                     transformers.push(SDImageTintTransformer.transformerWithColor(this.tintColor.ios));