Revert "[Docs Site] Add React to Container API (#20918)"

This reverts commit d47315f.

Author: kodster28

src/util/container.ts

@@ -1,6 +1,6 @@
 import { experimental_AstroContainer } from "astro/container";
-import reactRenderer from "@astrojs/react/server.js";
-import mdxRenderer from "@astrojs/mdx/server.js";
+import { getContainerRenderer } from "@astrojs/mdx";
+import { loadRenderers } from "astro:container";
 import { render, type CollectionEntry } from "astro:content";
 import type { AstroComponentFactory } from "astro/runtime/server/index.js";
 
@@ -12,14 +12,9 @@ export async function entryToString(
 		return entry.rendered.html;
 	}
 
-	const container = await experimental_AstroContainer.create({});
-	container.addServerRenderer({
-		name: "astro:jsx",
-		renderer: mdxRenderer,
-	});
-	container.addServerRenderer({
-		name: "@astrojs/react",
-		renderer: reactRenderer,
+	const renderers = await loadRenderers([getContainerRenderer()]);
+	const container = await experimental_AstroContainer.create({
+		renderers,
 	});
 
 	const { Content } = await render(entry);
@@ -36,14 +31,9 @@ export async function componentToString(
 	component: AstroComponentFactory,
 	props: any,
 ) {
-	const container = await experimental_AstroContainer.create({});
-	container.addServerRenderer({
-		name: "astro:jsx",
-		renderer: mdxRenderer,
-	});
-	container.addServerRenderer({
-		name: "@astrojs/react",
-		renderer: reactRenderer,
+	const renderers = await loadRenderers([getContainerRenderer()]);
+	const container = await experimental_AstroContainer.create({
+		renderers,
 	});
 
 	const html = await container.renderToString(component, {