Warn when JSDoc type cast misses parentheses

<!-- 🚨 STOP 🚨 𝗦𝗧𝗢𝗣 🚨 𝑺𝑻𝑶𝑷 🚨 Half of all issues filed here are duplicates, answered in the FAQ, or not appropriate for the bug tracker. Please read the FAQ first, especially the "Common Feature Requests" section. --> ## Search Terms <!-- List of keywords you searched for before creating this issue. Write them down here so that others can find this suggestion more easily -->jsdoc. type cast ## Suggestion <!-- A summary of what you'd like to see added or changed --> JSDoc type cast currently requires parentheses for technical reasons (#18212), but it does not warn when they don't exist. ## Use Cases <!-- What do you want to use this for? What shortcomings exist with current approaches? --> ```js // This doesn't work, the JSDoc comment is silently ignored // A warning message will help. const img = /** @type {HTMLImageElement} */ document.getElementById('#cat') img.src = 'cat.gif' ``` ## Examples <!-- Show how this would be used and what the behavior would be --> ```js const img = /** @type {HTMLImageElement} */ document.getElementById('#cat') ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ Warning: The JSDoc type cast misses parentheses and is being ignored img.src = 'cat.gif' ``` ## Checklist My suggestion meets these guidelines: * [x] This wouldn't be a breaking change in existing TypeScript/JavaScript code * [x] This wouldn't change the runtime behavior of existing JavaScript code * [x] This could be implemented without emitting different JS based on the types of the expressions * [x] This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.) * [x] This feature would agree with the rest of [TypeScript's Design Goals](https://github.com/Microsoft/TypeScript/wiki/TypeScript-Design-Goals).