fs: honor encoding option in glob APIs

Align glob, globSync, and fsPromises.glob with encoding semantics.

When encoding is 'buffer', return Buffer paths and Buffer dirent names.

Add regression tests and documentation updates to lock behavior.

Author: jorgitin02

doc/api/fs.md

@@ -1086,6 +1086,8 @@ behavior is similar to `cp dir1/ dir2/`.
 <!-- YAML
 added: v22.0.0
 changes:
+  - version: v26.0.0
+    description: Add support for `encoding` as an option.
   - version:
       - v24.1.0
       - v22.17.0
@@ -1115,10 +1117,14 @@ changes:
     If a string array is provided, each string should be a glob pattern that
     specifies paths to exclude. Note: Negation patterns (e.g., '!foo.js') are
     not supported.
+  * `encoding` {string} The path encoding. If set to `'buffer'`, the iterator
+    yields `Buffer` paths (or `Dirent` entries with `Buffer` names when
+    `withFileTypes` is `true`). **Default:** `'utf8'`.
   * `withFileTypes` {boolean} `true` if the glob should return paths as Dirents,
     `false` otherwise. **Default:** `false`.
-* Returns: {AsyncIterator} An AsyncIterator that yields the paths of files
-  that match the pattern.
+* Returns: {AsyncIterator} An AsyncIterator that yields matching paths as
+  {string} values, or {Buffer} values if `encoding` is `'buffer'` (or
+  {fs.Dirent} values when `withFileTypes` is `true`).
 
 ```mjs
 import { glob } from 'node:fs/promises';
@@ -3195,6 +3201,8 @@ descriptor. See [`fs.utimes()`][].
 <!-- YAML
 added: v22.0.0
 changes:
+  - version: v26.0.0
+    description: Add support for `encoding` as an option.
   - version:
       - v24.1.0
       - v22.17.0
@@ -3222,11 +3230,15 @@ changes:
   * `exclude` {Function|string\[]} Function to filter out files/directories or a
     list of glob patterns to be excluded. If a function is provided, return
     `true` to exclude the item, `false` to include it. **Default:** `undefined`.
+  * `encoding` {string} The path encoding. If set to `'buffer'`, `matches`
+    contains `Buffer` paths (or `Dirent` entries with `Buffer` names when
+    `withFileTypes` is `true`). **Default:** `'utf8'`.
   * `withFileTypes` {boolean} `true` if the glob should return paths as Dirents,
     `false` otherwise. **Default:** `false`.
 
 * `callback` {Function}
   * `err` {Error}
+  * `matches` {string\[]|Buffer\[]|fs.Dirent\[]}
 
 * Retrieves the files matching the specified pattern.
 
@@ -5760,6 +5772,8 @@ Synchronous version of [`fs.futimes()`][]. Returns `undefined`.
 <!-- YAML
 added: v22.0.0
 changes:
+  - version: v26.0.0
+    description: Add support for `encoding` as an option.
   - version:
       - v24.1.0
       - v22.17.0
@@ -5786,9 +5800,12 @@ changes:
   * `exclude` {Function|string\[]} Function to filter out files/directories or a
     list of glob patterns to be excluded. If a function is provided, return
     `true` to exclude the item, `false` to include it. **Default:** `undefined`.
+  * `encoding` {string} The path encoding. If set to `'buffer'`, returns
+    `Buffer` paths (or `Dirent` entries with `Buffer` names when
+    `withFileTypes` is `true`). **Default:** `'utf8'`.
   * `withFileTypes` {boolean} `true` if the glob should return paths as Dirents,
     `false` otherwise. **Default:** `false`.
-* Returns: {string\[]} paths of files that match the pattern.
+* Returns: {string\[]|Buffer\[]|fs.Dirent\[]} paths of files that match the pattern.
 
 ```mjs
 import { globSync } from 'node:fs';