ATOM-16854 Texture Settings dialog box crashes in the Editor (#5777)

Changes include:
-Fixed image preview issue which was trying to convert a compressed texture directly to QImage.
-Fixed texture resolution display for cubemap in texture setting editor.
-Sort the preset names in preset combo box
-Fixed a crash when showing IBLSkybox preset info in texture setting editor

Signed-off-by: Qing Tao <55564570+VickyAtAZ@users.noreply.github.com>

Gems/Atom/Asset/ImageProcessingAtom/Code/Source/Processing/ImagePreview.cpp

@@ -86,7 +86,7 @@ namespace ImageProcessingAtom
 
     IImageObjectPtr ImagePreview::GetOutputImage()
     {
-        return m_output.GetOutputImage(ImageConvertOutput::Preview);
+        return m_output.GetOutputImage();
     }
 
     ImagePreview::~ImagePreview()