fix(windows): correct wit-bindgen stripPrefix for Windows zip archives

The stripPrefix was not removing .zip extension for Windows archives,
causing extraction errors on Windows CI:

  Error: Prefix "wit-bindgen-0.46.0-x86_64-windows.zip" not found
  Should be: "wit-bindgen-0.46.0-x86_64-windows"

This fix adds .replace(".zip", "") alongside .replace(".tar.gz", "")
to handle both Unix (.tar.gz) and Windows (.zip) archive formats correctly.

Author: avrabe

toolchains/wasm_toolchain.bzl

@@ -535,7 +535,7 @@ def _download_wit_bindgen(repository_ctx):
     repository_ctx.download_and_extract(
         url = wit_bindgen_url,
         sha256 = tool_info["sha256"],
-        stripPrefix = "wit-bindgen-{}-{}".format(wit_bindgen_version, tool_info["url_suffix"].replace(".tar.gz", "")),
+        stripPrefix = "wit-bindgen-{}-{}".format(wit_bindgen_version, tool_info["url_suffix"].replace(".tar.gz", "").replace(".zip", "")),
     )
 
 def _download_wrpc(repository_ctx):