[WebView] Images copied from clipboard not written in source file format

Scenario 1:
1. Open https://www.w3schools.com/html/html_images.asp in FX WebView
2. Right Click on the JPG image. Context Menu pops up. Select "Copy Image to Clipboard"
3. Paste the image in file explorer

Scenario 2:
1. Open https://www.w3schools.com/html/html_images.asp in FX WebView
2. Click on the GIF image,drag it to the file explorer and drop

Expected Result:
Scenario 1: Image should be written as <filename>.jpg
Scenaior 2: Image should be dropped as <filename>.gif

Actual Result:
In both the scenarios, the image is written as .png file.