fix: Unwrap InferMatching type if aliased symbol not found

[Mrtenz]

This fixes extraction of documentation for type nodes without an aliased symbol, which seems to be the case for the DialogParams (possibly because it's a union).

The diff in the schema after this change:

@@ -85,7 +85,7 @@
     "description": "Display a [dialog](https://docs.metamask.io/snaps/features/custom-ui/dialogs/)\nin the MetaMask UI.",
     "parameters": {
       "type": "{ content: JSXElement } | { id: string } | { type: \"alert\"; content: JSXElement } | { type: \"alert\"; id: string } | { type: \"confirmation\"; content: JSXElement } | { type: \"confirmation\"; id: string } | { type: \"prompt\"; content: JSXElement; placeholder?: string | null } | { type: \"prompt\"; id: string; placeholder?: string | null }",
-      "description": null
+      "description": "The request parameters for the `snap_dialog` method."
     },
     "result": {
       "type": "Json",

---

Note

Low Risk
Small, localized change to schema generation logic that only affects documentation/metadata extraction, not runtime JSON-RPC behavior.

Overview
Improves generate-schema.mts so schema parameter descriptions are correctly extracted from JSDoc when the referenced type has no aliased symbol (falls back to the identifier’s symbol).

Adds unwrapInferMatchingTypeNode to resolve InferMatching<..., T> wrappers to the underlying type alias before reading JSDoc, fixing missing descriptions for types like DialogParams in the generated schema.json.

^{Written by Cursor Bugbot for commit 8acd542. This will update automatically on new commits. Configure here.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.58%. Comparing base (225bb57) to head (8acd542).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3863   +/-   ##
=======================================
  Coverage   98.58%   98.58%           
=======================================
  Files         428      428           
  Lines       12372    12372           
  Branches     1922     1922           
=======================================
  Hits        12197    12197           
  Misses        175      175           

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