Fix search icon always shown

Author: garronej

src/Header/Header.tsx

@@ -150,14 +150,16 @@ export const Header = memo(
                                                 classes.navbar
                                             )}
                                         >
-                                            <button
-                                                className={fr.cx("fr-btn--search", "fr-btn")}
-                                                data-fr-opened={false}
-                                                aria-controls={searchModalId}
-                                                title={t("search")}
-                                            >
-                                                {t("search")}
-                                            </button>
+                                            {renderSearchInput !== undefined && (
+                                                <button
+                                                    className={fr.cx("fr-btn--search", "fr-btn")}
+                                                    data-fr-opened={false}
+                                                    aria-controls={searchModalId}
+                                                    title={t("search")}
+                                                >
+                                                    {t("search")}
+                                                </button>
+                                            )}
                                             <button
                                                 className={fr.cx("fr-btn--menu", "fr-btn")}
                                                 data-fr-opened="false"