Hotpatching breaks in empty project after first build on Windows

**Problem**

On Windows, `dx serve --hot-patch` in an empty project (or a project that doesn't provide hotpatching) only works on the first build. After the first build, it consistently throws these errors:
```
00:38:53 [dev] Failed to generate fat binary: rust-lld: error: C:\Projects\Rust\repro\target\x86_64-pc-windows-msvc\desktop-dev\libdeps-5ac58618.a: unknown file type
00:38:53 [dev] Build completed successfully in 584ms, launching app! 💫
00:38:53 [dev] Failed to open app: %1 is not a valid Win32 application. (os error 193)
```

**Steps To Reproduce**

Steps to reproduce the behavior:

- new empty project:
```ps
cargo new repro ; cd repro
```
- run project with
```ps
dx serve --hot-patch
```
- ctrl+c to exit after the "Hello, world!" prints
- run the same command again and observe error

**Expected behavior**

It should keep working after the first build or throw a more appropriate error

**Environment:**

- Dioxus version: dioxus 0.7.0-rc.0 (a519fba)
- Rust version: rustc 1.90.0 (1159e78c4 2025-09-14)
- OS info: Windows 10
- App platform: desktop