chore: enable windows binaries

[Stratus3D]

Fixes #1973

[Stratus3D]

More work on CI tests is needed before this can be merged.

[CAOShurong]

I tested the current head 7b8266f21f7a944936e34890ff514f8f580d22f3 on native Windows/amd64 with Go 1.26.5 and an isolated ASDF_DATA_DIR. To avoid conflating the result with the fixture's Bash executable, I replaced the installed dummy tool with a copy of the native Windows whoami.exe named dummy.exe, then ran reshim.

Observed:

plugin add / install / reshim / set   exit 0
asdf which dummy.exe                  exit 0, resolves the installed dummy.exe
installed dummy.exe directly          exit 0, prints the current Windows identity
asdf exec dummy.exe                   exit 1, empty stdout and stderr
generated dummy.exe shim via Git Bash exit 1, empty stdout and stderr

The executable is therefore installed and resolved, but the final execution path fails. At this head, internal/cli/cli.go:621 calls internal/exec.Exec, which calls syscall.Exec; Go's Windows implementation returns syscall.EWINDOWS unconditionally. Generated shims end in exec asdf exec ..., so they cannot complete that final execution path on native Windows even after install, reshim, and which succeed.

I made no changes to the PR; this is verification against the pinned SHA.