Fix missing css style attribute in auto transition icons

REVIEW: 128928

data/pics/breeze-dark/dk_auto-transition.svg

 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" id="svg2">
     <defs id="defs3051">
-        <style id="current-color-scheme">
+        <style type="style/css" id="current-color-scheme">
             .ColorScheme-Text{color:#f2f2f2}.ColorScheme-Highlight{color:#3daee9}
         </style>
     </defs>

data/pics/breeze-light/lt_auto-transition.svg

 <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" id="svg2" viewBox="0 0 16 16">
     <defs id="defs4">
-        <style id="current-color-scheme">
+        <style type="style/css" id="current-color-scheme">
             .ColorScheme-Text{color:#4d4d4d}.ColorScheme-Background{color:#eff0f1}.ColorScheme-Highlight{color:#3daee9}.ColorScheme-ViewText{color:#31363b}.ColorScheme-ViewBackground{color:#fcfcfc}.ColorScheme-ViewHover{color:#93cee9}.ColorScheme-ViewFocus{color:#3daee9}.ColorScheme-ButtonText{color:#31363b}.ColorScheme-ButtonBackground{color:#eff0f1}.ColorScheme-ButtonHover{color:#93cee9}.ColorScheme-ButtonFocus{color:#3daee9}
         </style>
     </defs>