[Bug] Prop `style` does not unset properties that become `undefined`

Description

In the following snippet:

<MapGLMarker
        latitude={location.coordinates.latitude}
        longitude={location.coordinates.longitude}
        anchor="bottom"
        style={{
          ...(condition
            ? { background: 'red', }
            : { background: undefined, }), // Note: similar problem if just passing {}
        }}
      >

Expected Behavior

When condition goes from true to false, the background attribute is un-set on the element.

Steps to Reproduce

Reproduction: https://codesandbox.io/p/sandbox/long-rgb-6f4mdv

import * as React from "react";
import { createRoot } from "react-dom/client";
import Map, { Marker } from "react-map-gl";

import "mapbox-gl/dist/mapbox-gl.css";

function Root() {
  const [state, setState] = React.useState(false);
  return (
    <>
      <button onClick={() => setState(!state)}>
        background: {state ? "on" : "off"}
      </button>
      <Map
        initialViewState={{
          latitude: 37.8,
          longitude: -122.4,
          zoom: 14,
        }}
        style={{ width: "100vw", height: "100vh" }}
        mapStyle="https://basemaps.cartocdn.com/gl/positron-gl-style/style.json"
      >
        <Marker
          longitude={-122.4}
          latitude={37.8}
          style={{
            ...(state ? { background: "red" } : { background: undefined }), // Note: similar problem if just passing {}
          }}
        />
      </Map>
    </>
  );
}

/* global document */
createRoot(document.getElementById("app")).render(<Root />);

Environment

• Framework version: react-map-gl@8.1.1 (in my project; reproduction template used ^7.1.0)
• Map library: mapbox-gl@3.24.0
• Browser: (not relevant)
• OS: (not relevant)

Logs

No logging produced

Start with the Marker component entry point and trace how its style prop is applied during updates. Run the linked CodeSandbox reproduction, then inspect the style-update path for transitions from a defined background to undefined or an empty object. Done means the background attribute is removed when the condition changes to false.