fix: backport #18367,augment hash for CSS files to prevent chromium erroring by loading previous files (#18412)

Author: sapphi-red

packages/vite/src/node/plugins/css.ts

@@ -954,6 +954,16 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
           delete bundle[`${fileName}.map`]
         })
       }
+
+      const cssAssets = Object.values(bundle).filter(
+        (asset): asset is OutputAsset =>
+          asset.type === 'asset' && asset.fileName.endsWith('.css'),
+      )
+      for (const cssAsset of cssAssets) {
+        if (typeof cssAsset.source === 'string') {
+          cssAsset.source = cssAsset.source.replace(viteHashUpdateMarkerRE, '')
+        }
+      }
     },
   }
 }
@@ -1562,6 +1572,9 @@ function combineSourcemapsIfExists(
     : map1
 }
 
+const viteHashUpdateMarker = '/*$vite$:1*/'
+const viteHashUpdateMarkerRE = /\/\*\$vite\$:\d+\*\//
+
 async function finalizeCss(
   css: string,
   minify: boolean,
@@ -1574,6 +1587,16 @@ async function finalizeCss(
   if (minify && config.build.cssMinify) {
     css = await minifyCSS(css, config, false)
   }
+  // inject an additional string to generate a different hash for https://github.com/vitejs/vite/issues/18038
+  //
+  // pre-5.4.3, we generated CSS link tags without crossorigin attribute and generated an hash without
+  // this string
+  // in 5.4.3, we added crossorigin attribute to the generated CSS link tags but that made chromium browsers
+  // to block the CSSs from loading due to chromium's weird behavior
+  // (https://www.hacksoft.io/blog/handle-images-cors-error-in-chrome, https://issues.chromium.org/issues/40381978)
+  // to avoid that happening, we inject an additional string so that a different hash is generated
+  // for the same CSS content
+  css += viteHashUpdateMarker
   return css
 }