fix: avoid treating await in jsdoc as top-level await

[a-tarasyuk]

Fixes #874

---

parseJSDocIdentifierName uses newIdentifier, which may flag await identifier as a top-level declaration. @sandersn should this be suppressed when parsing JSDoc?

typescript-go/internal/parser/jsdoc.go

Line 1253 in cab7a0b

result := p.newIdentifier(text)

typescript-go/internal/parser/parser.go

Lines 2860 to 2867 in cab7a0b

	func (p *Parser) newIdentifier(text string) *ast.Node {
	p.identifierCount++
	id := p.factory.NewIdentifier(text)
	if text == "await" {
	p.statementHasAwaitIdentifier = true
	}
	return id
	}

[sandersn]

The trailing p.statementHasAwaitIdentifier = saveHasAwaitIdentifier should be the right code to suppress it; it should discard the true value before parseToplevelStatement examines it and adds the statement to the possibleAwaitSpans.