<Link /> and redirect navigation causes route handler being called twice

[wxh06]

Link to the code that reproduces this issue

https://codesandbox.io/p/devbox/t66xm6

To Reproduce

1. Start the application in development (next dev)
2. Navigate to /
3. Click “Link to /route”, “Link to /route without prefetch” or “redirect to /route” to see the current behavior of route.js handler
4. Click “Link to /page” or “redirect to /page” to see the behavior of page.js for comparison

Current vs. Expected behavior

Current behavior

GET handler being called twice after one click (route is logged twice)

• click on <Link />
  first has _rsc query string and the second does not
• server action redirect
  first has rsc: 1 in HTTP header and the second does not

Expected behavior

GET route handler should be called only once (similar to current behavior of page.js) since it's not a React component and there's no need to prefetch

Provide environment information

Binaries:
  Node: 20.9.0
  npm: 9.8.1
  Yarn: 1.22.19
  pnpm: 8.10.2
Relevant Packages:
  next: 15.0.4-canary.15 // Latest available version is detected (15.0.4-canary.15).
  eslint-config-next: N/A
  react: 19.0.0-rc-380f5d67-20241113
  react-dom: 19.0.0-rc-380f5d67-20241113
  typescript: 5.3.3
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

Navigation

Which stage(s) are affected? (Select all that apply)

next dev (local), next start (local)

Additional context

Might relate to #57257 but that one is about page.js instead of route.js handler
I've tested with v14.2.0-canary.48 where that issue is resolved, and the behavior makes no difference to the latest canary version