Autogenerated category with doc link: use doc frontmatter for category metadata

### Have you read the Contributing Guidelines on issues?

- [X] I have read the [Contributing Guidelines on issues](https://github.com/facebook/docusaurus/blob/main/CONTRIBUTING.md#reporting-new-issues).

### Description

when construct a category, if exiting README.md like found, use the doc's title and sidebar label for category

https://github.com/facebook/docusaurus/blob/9f0809ae2838c5877558a9d25ba7080e1b327405/packages/docusaurus-plugin-content-docs/src/sidebars/generator.ts#L235-L257



### Has this been requested on Canny?

_No response_

### Motivation

migrate old self gen behavior to newer auto gen, but the auto gen require defined category metadata, there are toooo many, just use the README.md or index.md as category's metadata if not found

### API design

_No response_

### Have you tried building it?

_No response_

### Self-service

- [X] I'd be willing to contribute this feature to Docusaurus myself.

	const link: SidebarItemCategoryLink \| undefined = categoryLinkedDocId
	? {
	type: 'doc',
	id: categoryLinkedDocId, // We "remap" a potentially "local id" to a "qualified id"
	}
	: // TODO typing issue
	(categoryMetadata?.link as SidebarItemCategoryLink \| undefined);

	// If a doc is linked, remove it from the category subItems
	const items = allItems.filter(
	(item) => !(item.type === 'doc' && item.id === categoryLinkedDocId),
	);

	return {
	type: 'category',
	label: categoryMetadata?.label ?? filename,
	collapsible:
	categoryMetadata?.collapsible ?? options.sidebarCollapsible,
	collapsed: categoryMetadata?.collapsed ?? options.sidebarCollapsed,
	position: categoryMetadata?.position ?? numberPrefix,
	...(className !== undefined && {className}),
	items,
	...(link && {link}),

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Autogenerated category with doc link: use doc frontmatter for category metadata #6254

Have you read the Contributing Guidelines on issues?

Description

Has this been requested on Canny?

Motivation

API design

Have you tried building it?

Self-service

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Uh oh!

Autogenerated category with doc link: use doc frontmatter for category metadata #6254

Description

Have you read the Contributing Guidelines on issues?

Description

Has this been requested on Canny?

Motivation

API design

Have you tried building it?

Self-service

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions