Check for identifier before obtaining text of name

[ahejlsberg]

Fixes #1975.

[Copilot]

Pull Request Overview

This PR adds a defensive type check to prevent incorrect parameter name matching when processing JSDoc parameter tags for functions with destructured parameters.

• Adds an IsIdentifier check before accessing the parameter name's text representation
• Prevents potential crashes or incorrect behavior when parameters use destructuring patterns like {x, y}

[jakebailey]

#1976 has a test. I don't really care which PR goes in, just need to get someone to review PRs...

[ahejlsberg]

I don't know that a regression test adds a lot of value here, so I'll merge this PR.