TYPO3 Core

When you try to use SVG of AI as images in a CE the (preview)processing in FE and BE is broken as the core tries to keep there existing file extension but isn't able to generate the correct content for this.

this was introduced with #73106 were before all files except jp(e)g, png and gif were changed to png or gif depending on the configuration.

ImageMagick/GraphicsMagick probably can handle more output formats, but the rest of our processing chain can handle that properly at the moment, so for now we need to keep the output formats to only those formats we know we can handle and are supported by the browsers to use directly in the HTML output.