This commit changes the `MockServletContext.getMimeType` method to use `MediaTypeFactory` instead of JAF. It also adds a `addMimeType(String, MediaType)` method to customize the mime types returned from said method. Issue: SPR-14908
This commit changes the `MockServletContext.getMimeType` method to use `MediaTypeFactory` instead of JAF. It also adds a `addMimeType(String, MediaType)` method to customize the mime types returned from said method. Issue: SPR-14908