Update changelog and add test for absolute url rebasing (#15282)

I noticed uncommitted changes of #15275 on my local setup so here's the
updated changelog and the added unit test.

CHANGELOG.md

@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
-- Ensure absolute `url()`s inside imported CSS files are not rebased when using `@tailwindcss/vite`
+- Ensure absolute `url()`s inside imported CSS files are not rebased when using `@tailwindcss/vite` ([#15275](https://github.com/tailwindlabs/tailwindcss/pull/15275))
 - Fix issues with dev servers using Svelte 5 with the Vite plugin ([#15274](https://github.com/tailwindlabs/tailwindcss/issues/15274))
 - Fix resolution of imported CSS files in Vite SSR builds ([#15279](https://github.com/tailwindlabs/tailwindcss/issues/15279))
 - Ensure other plugins can run after `@tailwindcss/postcss` ([#15273](https://github.com/tailwindlabs/tailwindcss/pull/15273))

packages/@tailwindcss-node/src/urls.test.ts

@@ -18,6 +18,12 @@ test('URLs can be rewritten', async () => {
         background: url('./image.jpg');
         background: url("./image.jpg");
 
+        /* Absolute URLs: ignored */
+        background: url(/image.jpg);
+        background: url(/foo/image.jpg);
+        background: url('/image.jpg');
+        background: url("/image.jpg");
+
         /* External URL: ignored */
         background: url(http://example.com/image.jpg);
         background: url('http://example.com/image.jpg');
@@ -99,6 +105,10 @@ test('URLs can be rewritten', async () => {
       background: url(./foo/image.jpg);
       background: url('./foo/bar/image.jpg');
       background: url("./foo/bar/image.jpg");
+      background: url(/image.jpg);
+      background: url(/foo/image.jpg);
+      background: url('/image.jpg');
+      background: url("/image.jpg");
       background: url(http://example.com/image.jpg);
       background: url('http://example.com/image.jpg');
       background: url("http://example.com/image.jpg");