Add 'state' option for secondary entity info on Entities card (#26201)

* add 'state' option for secondary entity info on Entities card

* Use formatEntityState instead of computeStateDisplay

src/panels/lovelace/components/hui-generic-entity-row.ts

@@ -146,7 +146,11 @@ export class HuiGenericEntityRow extends LitElement {
                                           100
                                       )}
                                       %`
-                                    : nothing)}
+                                    : this.config.secondary_info === "state"
+                                      ? html`${this.hass.formatEntityState(
+                                          stateObj
+                                        )}`
+                                      : nothing)}
                     </div>
                   `
                 : nothing}