Should be able to ovveride defaultvalue of style in selection.

null or false should be able to prevent overriding the style.
As discussed here: https://github.com/openlayers/openlayers/issues/10131

src/ol/interaction/Select.js

@@ -206,7 +206,7 @@ class Select extends Interaction {
      * @private
      * @type {import("../style/Style.js").default|Array.<import("../style/Style.js").default>|import("../style/Style.js").StyleFunction|null}
      */
-    this.style_ = options.style ? options.style : getDefaultStyleFunction();
+    this.style_ = options.style !== undefined ? options.style : getDefaultStyleFunction();
 
     /**
      * An association between selected feature (key)