Blockquote schema constraints do not match contentful behaviour in @contentful/rich-text-types

[JonathanVelkeneers]

In the current version of @contentful/rich-text-types (17.2.5), the schema validation types allow all Block children as descendant of the blockquote Container.

The issue herein lies that contful does not allow heading elements to be direct descendants of blockquotes.
The contentful web app does not allow creating it, and the validateRichTextDocument function warns that it is invalid:

[
  {
    "details": "Value must be one of expected values",
    "name": "in",
    "expected": [
      "paragraph"
    ],
    "path": [
      "content",
      4,
      "content",
      1,
      "nodeType"
    ],
    "value": "heading-3"
  }
]

---

The types should be adjusted to reflect the actual allowed children of the blockquote container.

Related types code snippets

// blocks.d.ts:
/**
 * Map of all Contentful block types. Blocks contain inline or block nodes.
 */
export declare enum BLOCKS {
    DOCUMENT = "document",
    PARAGRAPH = "paragraph",
    HEADING_1 = "heading-1",
    HEADING_2 = "heading-2",
    HEADING_3 = "heading-3",
    HEADING_4 = "heading-4",
    HEADING_5 = "heading-5",
    HEADING_6 = "heading-6",
    OL_LIST = "ordered-list",
    UL_LIST = "unordered-list",
    LIST_ITEM = "list-item",
    HR = "hr",
    QUOTE = "blockquote",
    EMBEDDED_ENTRY = "embedded-entry-block",
    EMBEDDED_ASSET = "embedded-asset-block",
    EMBEDDED_RESOURCE = "embedded-resource-block",
    TABLE = "table",
    TABLE_ROW = "table-row",
    TABLE_CELL = "table-cell",
    TABLE_HEADER_CELL = "table-header-cell"
}

// schemaConstraints.d.ts:
/**
 * Dictionary of all container block types, and the set block types they accept as children.
 *
 * Note: This does not include `[BLOCKS.DOCUMENT]: TOP_LEVEL_BLOCKS`
 */
export declare const CONTAINERS: {
    "ordered-list": BLOCKS[];
    "unordered-list": BLOCKS[];
    "list-item": TopLevelBlockEnum[];
    blockquote: BLOCKS[];
    table: BLOCKS[];
    "table-row": BLOCKS[];
    "table-cell": BLOCKS[];
    "table-header-cell": BLOCKS[];
};