Add type safety to interface AuditLogChange

[OverwrittenCode]

Which application or package is this feature request for?

discord.js

Feature

When using the <GuildAuditLogsEntry>#changes inside Events.GuildAuditLogEntryCreate, the interface AuditLogChange does not have any type safety as it merges all the properties in the union of APIAuditLogChange together, which prevents the discriminator property AuditLogChange#key from narrowing down the types .

Ideal solution or implementation

Replace interface AuditLogChange with the below:

export type AuditLogChange = APIAuditLogChange extends infer U extends APIAuditLogChange
	? U extends U
		? {
				key: U["key"];
				old?: U["old_value"];
				new?: U["new_value"];
			}
		: never
	: never;

See typescript playground example

Alternative solutions or implementations

No response

Other context

No response