refactor(core): include_js_files! 'dir' option doesn't change specifiers (#18019)

This commit changes "include_js_files!" macro from "deno_core"
in a way that "dir" option doesn't cause specifiers to be rewritten 
to include it.

Example:
```
include_js_files! {
  dir "js",
  "hello.js",
}
```

The above definition required embedders to use:
`import ... from "internal:<ext_name>/js/hello.js"`. 
But with this change, the "js" directory in which the files are stored
is an implementation detail, which for embedders results in: 
`import ... from "internal:<ext_name>/hello.js"`.

The directory the files are stored in, is an implementation detail and 
in some cases might result in a significant size difference for the 
snapshot. As an example, in "deno_node" extension, we store the 
source code in "polyfills" directory; which resulted in each specifier 
to look like "internal:deno_node/polyfills/<module_name>", but with 
this change it's "internal:deno_node/<module_name>". 

Given that "deno_node" has over 100 files, many of them having 
several import specifiers to the same extension, this change removes
10 characters from each import specifier.

1 files changed, 8 insertions, 8 deletions

diff --git a/ext/node/polyfills/readline/promises.ts b/ext/node/polyfills/readline/promises.ts
index 47e3b5b22..c8650dc23 100644
--- a/ext/node/polyfills/readline/promises.ts
+++ b/ext/node/polyfills/readline/promises.ts
@@ -1,28 +1,28 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 // Copyright Joyent and Node contributors. All rights reserved. MIT license.
 
-import { Readline } from "internal:deno_node/polyfills/internal/readline/promises.mjs";
+import { Readline } from "internal:deno_node/internal/readline/promises.mjs";
 
 import {
   Interface as _Interface,
   kQuestion,
   kQuestionCancel,
-} from "internal:deno_node/polyfills/internal/readline/interface.mjs";
-import { AbortError } from "internal:deno_node/polyfills/internal/errors.ts";
-import { validateAbortSignal } from "internal:deno_node/polyfills/internal/validators.mjs";
+} from "internal:deno_node/internal/readline/interface.mjs";
+import { AbortError } from "internal:deno_node/internal/errors.ts";
+import { validateAbortSignal } from "internal:deno_node/internal/validators.mjs";
 
-import { kEmptyObject } from "internal:deno_node/polyfills/internal/util.mjs";
-import type { Abortable } from "internal:deno_node/polyfills/_events.d.ts";
+import { kEmptyObject } from "internal:deno_node/internal/util.mjs";
+import type { Abortable } from "internal:deno_node/_events.d.ts";
 import type {
   AsyncCompleter,
   Completer,
   ReadLineOptions,
-} from "internal:deno_node/polyfills/_readline_shared_types.d.ts";
+} from "internal:deno_node/_readline_shared_types.d.ts";
 
 import type {
   ReadableStream,
   WritableStream,
-} from "internal:deno_node/polyfills/_global.d.ts";
+} from "internal:deno_node/_global.d.ts";
 
 /**
  * The `readline/promise` module provides an API for reading lines of input from a Readable stream one line at a time.