Add optionality to @typedef's @property

[sandersn]

Just like @param optionality (about 70 lines later at line 140) except that it's added to a synthetic property signature, so no need to check for an existing ?.

Also a driveby style improvement.

[Copilot]

Pull Request Overview

This PR adds support for marking @typedef properties as optional (via string= or bracketed syntax) by emitting a question token in the AST, and it removes outdated error baselines that expected missing-property errors for those cases.

• Enhance the JSDoc reparser to produce a ? token for optional properties in typedefs
• Remove old test baselines that asserted errors for missing optional properties

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
testdata/baselines/reference/submoduleAccepted/conformance/checkJsdocTypedefInParamTag1.errors.txt.diff	Remove old error expectations for optional props
testdata/baselines/reference/submodule/conformance/checkJsdocTypedefInParamTag1.errors.txt	Remove old error expectations for optional props
internal/parser/reparser.go	Add logic to emit ? question token for optional JSDoc properties

Comments suppressed due to low confidence (2)

internal/parser/reparser.go:71

• Add a brief comment explaining that bracketed or @type= expressions map to an optional property (?) in the emitted signature to aid future readers.

if member.AsJSDocPropertyTag().IsBracketed || member.AsJSDocPropertyTag().TypeExpression != nil && member.AsJSDocPropertyTag().TypeExpression.Type().Kind == ast.KindJSDocOptionalType {

testdata/baselines/reference/submoduleAccepted/conformance/checkJsdocTypedefInParamTag1.errors.txt.diff:1

• The removal of the old error baseline tests for missing optional properties is correct, but consider adding new positive tests that verify no error is reported when optional properties are omitted.

diff --git a/testdata/baselines/reference/submoduleAccepted/conformance/checkJsdocTypedefInParamTag1.errors.txt.diff b/testdata/baselines/reference/submoduleAccepted/conformance/checkJsdocTypedefInParamTag1.errors.txt.diff