Redesign ha-button (#25564)

Co-authored-by: Bram Kragten <mail@bramkragten.nl>

src/components/data-table/dialog-data-table-settings.ts

@@ -152,7 +152,10 @@ export class DialogDataTableSettings extends LitElement {
             )}
           </ha-list>
         </ha-sortable>
-        <ha-button slot="secondaryAction" @click=${this._reset}
+        <ha-button
+          appearance="plain"
+          slot="secondaryAction"
+          @click=${this._reset}
           >${localize("ui.components.data-table.settings.restore")}</ha-button
         >
         <ha-button slot="primaryAction" @click=${this.closeDialog}>