fix(npm): canonicalize filename before returning (#18948)

This commit changes how paths for npm packages are handled,
by canonicalizing them when resolving. This is done so that instead
of returning
"node_modules/<package_name>@<version>/node_modules/<dep>/index.js"
(which is a symlink) we "node_modules/<dep>@<dep_version>/index.js.

Fixes https://github.com/denoland/deno/issues/18924
Fixes https://github.com/bluwy/create-vite-extra/issues/31

---------

Co-authored-by: David Sherret <dsherret@gmail.com>

cli/tests/testdata/npm/local_dir_resolves_symlinks/index.js

@@ -0,0 +1,3 @@
+import * as d from "define-properties";
+
+console.log(typeof d.default === "function", "it works");

cli/tests/testdata/npm/local_dir_resolves_symlinks/index.out

@@ -0,0 +1,2 @@
+Download [WILDCARD]
+true it works

cli/tests/testdata/npm/local_dir_resolves_symlinks/package.json

@@ -0,0 +1,7 @@
+{
+  "name": "foo",
+  "type": "module",
+  "dependencies": {
+    "define-properties": "^1.2.0"
+  }
+}