chore: upgrade rspack 1.5.8

package.json

@@ -146,7 +146,7 @@
     "@next/third-parties": "workspace:*",
     "@opentelemetry/api": "1.4.1",
     "@picocss/pico": "1.5.10",
-    "@rspack/core": "1.5.0",
+    "@rspack/core": "1.5.8",
     "@slack/web-api": "7.9.1",
     "@swc/cli": "0.1.55",
     "@swc/core": "1.11.24",

packages/next-rspack/package.json

@@ -7,6 +7,6 @@
   },
   "types": "index.d.ts",
   "dependencies": {
-    "@next/rspack-core": "1.0.0"
+    "@next/rspack-core": "npm:@next-rspack/core@1.0.1-beta.0"
   }
 }

packages/next/package.json

@@ -169,7 +169,7 @@
     "@next/swc": "16.0.0-canary.5",
     "@opentelemetry/api": "1.6.0",
     "@playwright/test": "1.51.1",
-    "@rspack/core": "1.5.0",
+    "@rspack/core": "1.5.8",
     "@storybook/addon-a11y": "8.6.0",
     "@storybook/addon-essentials": "8.6.0",
     "@storybook/addon-interactions": "8.6.0",

packages/next/src/build/webpack-config.ts

@@ -2241,15 +2241,6 @@ export default async function getBaseWebpackConfig(
         : undefined,
   }
 
-  if (isRspack) {
-    // @ts-ignore
-    // Disable Rspack's incremental buildChunkGraph due to Next.js compatibility issues
-    // TODO: Remove this workaround after Rspack 1.5.1 release
-    webpack5Config.experiments.incremental = {
-      buildChunkGraph: false,
-    }
-  }
-
   webpack5Config.module!.parser = {
     javascript: {
       url: 'relative',