fix: Icon color was not correct for Custom provider

This icon was using `fill: currentColor` which is not good for Custom
provivder icon; but `fill: inherit` as set with `preserveColor` does the
job

Author: paultranvan

packages/cozy-search/src/components/CreateAssistantSteps/Provider.jsx

@@ -53,11 +53,11 @@ const Provider = ({ selectedProvider, provider, onSelect }) => {
         )}
       >
         {
-          /* FIXME: the twake icon is not rendered properly with Icon */
+          /* FIXME: the twake icon is not rendered properly with Icon <TwakeLogo width={40} height={40} /> */
           isOpenRag ? (
             <TwakeLogo width={40} height={40} />
           ) : (
-            <Icon icon={ICONS[provider.icon]} size={40} />
+            <Icon icon={ICONS[provider.icon]} size={40} preserveColor />
           )
         }
       </div>