Fix workflow placeholders and icons (#11222)

- allow all form fields that may need a placeholder to set it
- update main icons on versions and runs

packages/twenty-front/src/pages/object-record/RecordShowPage.tsx

@@ -24,7 +24,7 @@ export const RecordShowPage = () => {
     objectRecordId: string;
   }>();
 
-  const { objectNameSingular, objectRecordId, headerIcon } = useRecordShowPage(
+  const { objectNameSingular, objectRecordId } = useRecordShowPage(
     parameters.objectNameSingular ?? '',
     parameters.objectRecordId ?? '',
   );
@@ -55,7 +55,6 @@ export const RecordShowPage = () => {
                   <RecordShowPageHeader
                     objectNameSingular={objectNameSingular}
                     objectRecordId={objectRecordId}
-                    headerIcon={headerIcon}
                   >
                     <RecordShowActionMenu />
                   </RecordShowPageHeader>

packages/twenty-front/src/pages/object-record/RecordShowPageHeader.tsx

@@ -13,7 +13,6 @@ export const RecordShowPageHeader = ({
 }: {
   objectNameSingular: string;
   objectRecordId: string;
-  headerIcon: React.ComponentType;
   children?: React.ReactNode;
 }) => {
   const { viewName, navigateToIndexView, objectMetadataItem } =