docs: add import.meta.webpackContext

[ersachin3112]

fix #6003

add import.meta.webpackContext

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[snitin315]

Let's document the whole type.

Suggested change

	- Type: `function`
	- Type:
	```ts
	(
	request: string,
	options?: {
	recursive?: boolean;
	regExp?: RegExp;
	include?: RegExp;
	exclude?: RegExp;
	preload?: boolean | number;
	prefetch?: boolean | number;
	chunkName?: string;
	exports?: string | string[][];
	mode?: "sync" | "eager" | "weak" | "lazy" | "lazy-once";
	}
	) => webpack.Context