Prefetch full refetch the payload if there is already an inflight on Next 16

[hamidrezahanafi]

Link to the code that reproduces this issue

https://github.com/hamidrezahanafi/prefetch-full

To Reproduce

1. npm install
2. npm run build
3. npm run start
4. try to click on search link as fast as possible

Current vs. Expected behavior

Current
Extra RSC request is being made even though a full prefetch is still on flight
Expected
Only one RSC request should go out even if the click is super fast

Provide environment information

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 24.6.0: Wed Oct 15 21:12:15 PDT 2025; root:xnu-11417.140.69.703.14~1/RELEASE_ARM64_T6041
  Available memory (MB): 49152
  Available CPU cores: 14
Binaries:
  Node: 22.20.0
  npm: 10.9.3
  Yarn: 1.22.22
  pnpm: N/A
Relevant Packages:
  next: 16.0.3 // Latest available version is detected (16.0.3).
  eslint-config-next: N/A
  react: 19.2.0
  react-dom: 19.2.0
  typescript: 5.9.3
Next.js Config:

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

Route Handlers

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

next start (local)

Additional context

No response