wasm: disable npm install (envoyproxy#21487)

Signed-off-by: Lizan Zhou <lizan@tetrate.io>
Signed-off-by: Amila Senadheera <amila.15@cse.mrt.ac.lk>

bazel/emsdk.patch

@@ -0,0 +1,48 @@
+diff --git a/bazel/emscripten_deps.bzl b/bazel/emscripten_deps.bzl
+index 95801ba..95fdabd 100644
+--- a/bazel/emscripten_deps.bzl
++++ b/bazel/emscripten_deps.bzl
+@@ -69,31 +69,3 @@ def emscripten_deps(emscripten_version = "latest"):
+             build_file = "@emsdk//emscripten_toolchain:emscripten.BUILD",
+             type = "zip",
+         )
+-
+-    if "emscripten_npm_linux" not in excludes:
+-        npm_install(
+-            name = "emscripten_npm_linux",
+-            package_json = "@emscripten_bin_linux//:emscripten/package.json",
+-            package_lock_json = "@emscripten_bin_linux//:emscripten/package-lock.json",
+-        )
+-
+-    if "emscripten_npm_mac" not in excludes:
+-        npm_install(
+-            name = "emscripten_npm_mac",
+-            package_json = "@emscripten_bin_mac//:emscripten/package.json",
+-            package_lock_json = "@emscripten_bin_mac//:emscripten/package-lock.json",
+-        )
+-
+-    if "emscripten_npm_mac_arm64" not in excludes:
+-        npm_install(
+-            name = "emscripten_npm_mac",
+-            package_json = "@emscripten_bin_mac_arm64//:emscripten/package.json",
+-            package_lock_json = "@emscripten_bin_mac_arm64//:emscripten/package-lock.json",
+-        )
+-
+-    if "emscripten_npm_win" not in excludes:
+-        npm_install(
+-            name = "emscripten_npm_win",
+-            package_json = "@emscripten_bin_win//:emscripten/package.json",
+-            package_lock_json = "@emscripten_bin_win//:emscripten/package-lock.json",
+-        )
+diff --git a/bazel/emscripten_toolchain/BUILD.bazel b/bazel/emscripten_toolchain/BUILD.bazel
+index eb36959..12dba37 100644
+--- a/bazel/emscripten_toolchain/BUILD.bazel
++++ b/bazel/emscripten_toolchain/BUILD.bazel
+@@ -13,7 +13,6 @@ filegroup(
+         "env.sh",
+         "env.bat",
+         "@emsdk//:binaries",
+-        "@emsdk//:node_modules",
+         "@nodejs//:node_files",
+     ],
+ )

bazel/repositories.bzl

@@ -1012,7 +1012,11 @@ def _proxy_wasm_cpp_host():
     external_http_archive(name = "proxy_wasm_cpp_host")
 
 def _emsdk():
-    external_http_archive(name = "emsdk")
+    external_http_archive(
+        name = "emsdk",
+        patch_args = ["-p2"],
+        patches = ["@envoy//bazel:emsdk.patch"],
+    )
 
 def _com_github_google_jwt_verify():
     external_http_archive("com_github_google_jwt_verify")