Add missing id/name fields to context schema docs

[kriswest]

supersedes #1233

Adds missing id and name fields from the context base schema to context schemas that use them (but don't define sub-properties) so that they show up in documentation correctly, in the following types:

• Contact
• ContactList
• Country
• InstrumentList
• OrderList
• Organization
• Portfolio
• Position
• TradeList

Also fixes:

• Rendering of internal references (e.g. internal $refs to $defs or definitions used in a schema), which was broken in ChatSearchCriteria (which defines a SearchCriteria element).
• Bulleting of polymorphic array items (oneOf, anyOf etc.)
• A number of broken links that have slipped through in other PRs which docusaurus reports on a manual build

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[hughtroeger]

Looks good! All the names and ids are there and the updated links navigate as expected.