Set scale instead of generating at device resolution

Author: markholland

ios/src/Compression.m

@@ -53,7 +53,9 @@ - (ImageResult*) compressImageDimensions:(UIImage*)image
     }
     CGSize newSize = CGSizeMake(newWidth, newHeight);
 
-    UIGraphicsImageRenderer *renderer = [[UIGraphicsImageRenderer alloc] initWithSize:newSize];
+    UIGraphicsImageRendererFormat *format = [UIGraphicsImageRendererFormat new];
+    format.scale = 1;
+    UIGraphicsImageRenderer *renderer = [[UIGraphicsImageRenderer alloc] initWithSize:newSize format:format];
     UIImage *resizedImage = [renderer imageWithActions:^(UIGraphicsImageRendererContext * _Nonnull rendererContext) {
         [image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
     }];