JSDoc type aliases aren't parsed or bound at the end of blocks

Bug Report

Followup to #54037 and #53624
This is not a regression, and fixing it would require

• the parser to check for jsdoc before each close brace
• the ast to store optional jsdoc on each close brace, and store the close brace on each block
• the binder to visit each close brace to check for jsdoc to bind

So I think it's too expensive for a feature that nobody has noticed missing until recently.

🔎 Search Terms

JSDoc type alias ignored

🕗 Version & Regression Information

• This is the behavior in every version I tried

💻 Code

// @filename: typedefAtEndOfBlock.js
// @checkJs: true
// @outdir: dist
// @declaration: true
function f() {
  /* @type {A} */
  var a = 2
  /** @typedef {string} A */
}
{
  /* @type {B} */
  var b = 2
  /** @typedef {string} B */
}
export class Class {
  /* @type {C} */
  c = 1
  /** @typedef {string} C */
}
const Dlass = class {
  /* @type {D} */
  d = 1
  /** @typedef {string} D */
}

🙁 Actual behavior

None of the typedefs are parsed or bound.

🙂 Expected behavior

The typedefs are parsed and bound.
(And none are visible outside their containers, which is not true for classes right now).

Start with the typedefAtEndOfBlock.js reproduction and trace how the parser, AST, and binder handle JSDoc before closing braces. Compare the behavior described in #54037 and #53624. Done means the typedefs are parsed and bound within their containers, with the documented class visibility behavior addressed.