Add missing props to @rerun-io/web-viewer-react

[jprochazk]

We added new options to the web viewer, but other than a select few (hide_welcome_screen, width, height), there is no way to set them on the React component.

We'd have to update Props to extend WebViewerOptions here:

rerun/rerun_js/web-viewer-react/index.js

Lines 4 to 12 in b580da4

	/**
	* @typedef Props
	* @property {string | string[]} rrd URL(s) of the `.rrd` file(s) to load.
	* Changing this prop will open any new unique URLs as recordings,
	* and close any URLs which are not present.
	* @property {string} [width] CSS width of the viewer's parent div
	* @property {string} [height] CSS height of the viewer's parent div
	* @property {boolean} [hide_welcome_screen] Whether to hide the welcome screen. Default is `false`.
	*/

And then pass those props into the handle.start in componentDidMount:

rerun/rerun_js/web-viewer-react/index.js

Lines 45 to 49 in b580da4

	this.#handle.start(this.#recordings, current, {
	hide_welcome_screen: this.#hide_welcome_screen,
	width: "100%",
	height: "100%",
	});

Whenever the options change, we should restart the viewer, and add some documentation advising users not to change them very often.