2019-09: vocabulary gating not applied to completion/hover/document symbols

[aeschli]

Found while reviewing #308 (JSON Schema 2019-09 support).

Problem

JSONDocument.getMatchingSchemas gained an activeVocabularies parameter, but the callers do not pass it:

• src/services/jsonCompletion.ts (doc.getMatchingSchemas(schema.schema, node.offset))
• src/services/jsonHover.ts
• src/services/jsonDocumentSymbols.ts

As a result, completion and hover ignore vocabulary-disabled keywords, which is inconsistent with validation (which does thread schema.activeVocabularies).

Suggested direction

Thread resolvedSchema.activeVocabularies through the completion/hover/document-symbol code paths.

Severity

Medium — inconsistent behavior between validation and IntelliSense.