doc: remove extensionless CJS exception for type:module packages

Remove the documented exception that extensionless files in
type: "module" packages are recognized as CommonJS when included
via require(). This exception conflicted with the ESM resolution
specification which states that extensionless files within a
package scope with an explicit type field follow the format of
the type field.

The behavior on main already matches the ESM spec since #61600,
this change aligns the CJS documentation accordingly.

Refs: #61600
Refs: #62083
PR-URL: #62176
Refs: #61600
Refs: #62083
Refs: #61971
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

Author: mcollina

doc/api/modules.md

@@ -76,10 +76,11 @@ Node.js has two module systems: CommonJS modules and [ECMAScript modules][].
 
 By default, Node.js will treat the following as CommonJS modules:
 
-* Files with a `.cjs` extension;
+* Files with a `.cjs` extension.
 
-* Files with a `.js` extension when the nearest parent `package.json` file
-  contains a top-level field [`"type"`][] with a value of `"commonjs"`.
+* Files with a `.js` extension or without an extension, when the nearest parent
+  `package.json` file contains a top-level field [`"type"`][] with a value of
+  `"commonjs"`.
 
 * Files with a `.js` extension or without an extension, when the nearest parent
   `package.json` file doesn't contain a top-level field [`"type"`][] or there is
@@ -90,11 +91,9 @@ By default, Node.js will treat the following as CommonJS modules:
   tools and loaders to determine how the files in the package should be
   interpreted.
 
-* Files with an extension that is not `.mjs`, `.cjs`, `.json`, `.node`, or `.js`
-  (when the nearest parent `package.json` file contains a top-level field
-  [`"type"`][] with a value of `"module"`, those files will be recognized as
-  CommonJS modules only if they are being included via `require()`, not when
-  used as the command-line entry point of the program).
+* Files with an extension that is not `.mjs`, `.cjs`, `.json`, `.node`, or `.js`,
+  when the nearest parent `package.json` file contains a top-level field
+  [`"type"`][] with a value of `"module"`.
 
 See [Determining module system][] for more details.