URL Fragment is removed when navigating via next link to another page using a relative URL which results in a dynamic route

### Link to the code that reproduces this issue https://github.com/tklepzig/nextjs-link-with-fragment ### To Reproduce 1. npm i 2. npm run dev 3. Navigate to http://localhost:3000/42/subpage 4. Click some of the links and check their desired target (e.g. the browser tooltip at the bottom of the page) with the URL which is routed to after clicking the link. ### Current vs. Expected behavior Expected: Several links are rendered on this page, all of them contain an URL fragment. I expect clicking on all of these links I end up on a page with a fragment in the URL. Observation: While some of them work, two links targeting another page by using a relative URL, which include a dynamic route don't have the fragment on the URL after routing. Additionally, for a href which does not contain a dynamic route the fragment is missing after routing as well if the link contains a slash before the hash char. ### Provide environment information ```bash Operating System: Platform: darwin Arch: arm64 Version: Darwin Kernel Version 24.1.0: Thu Oct 10 21:05:14 PDT 2024; root:xnu-11215.41.3~2/RELEASE_ARM64_T8103 Available memory (MB): 16384 Available CPU cores: 8 Binaries: Node: 20.8.1 npm: 10.1.0 Yarn: N/A pnpm: N/A Relevant Packages: next: 15.3.0-canary.23 // Latest available version is detected (15.3.0-canary.23). eslint-config-next: 15.3.0-canary.23 react: 19.0.0 react-dom: 19.0.0 typescript: 5.8.2 Next.js Config: output: N/A ``` ### Which area(s) are affected? (Select all that apply) Linking and Navigating ### Which stage(s) are affected? (Select all that apply) next dev (local), next start (local) ### Additional context _No response_