Allow OTP input for WebAssembly npm publish workflow (#10156)

The `WebAssembly Publish` Actions job failed at `npm publish` with
`EOTP` because the workflow had no path to supply npm one-time passwords
for OTP-protected accounts. This change adds secure OTP input wiring for
manual publish runs while preserving the existing token-based flow.

- **Workflow dispatch input**
- Added optional `workflow_dispatch` input `npm_otp` in
`.github/workflows/wasm-release.yml`.

- **Secure OTP handling**
- Added a dedicated masking step so provided OTP values are redacted in
logs.
- Routed OTP to npm via `NPM_CONFIG_OTP` in the publish step
environment.

- **Publish step behavior**
- Kept publish command as `npm publish`; npm now consumes OTP
automatically when provided through env.

```yaml
on:
  workflow_dispatch:
    inputs:
      npm_otp:
        description: "One-time password for npm publish (optional)"
        required: false
        type: string

# ...

- name: Mask npm OTP
  if: ${{ github.event.inputs.npm_otp != '' }}
  run: echo "::add-mask::${{ github.event.inputs.npm_otp }}"

- name: Publish
  run: npm publish
  env:
    NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
    NPM_CONFIG_OTP: ${{ github.event.inputs.npm_otp }}
```

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

.github/workflows/wasm-release.yml

@@ -2,6 +2,11 @@ name: WebAssembly Publish
 
 on:
   workflow_dispatch:
+    inputs:
+      npm_otp:
+        description: "One-time password for npm publish (optional)"
+        required: false
+        type: string
   release:
     types: [published]
 
@@ -61,7 +66,12 @@ jobs:
       - name: Test
         run: npm test
 
+      - name: Mask npm OTP
+        if: ${{ github.event.inputs.npm_otp != '' }}
+        run: echo "::add-mask::${{ github.event.inputs.npm_otp }}"
+
       - name: Publish
         run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+          NPM_CONFIG_OTP: ${{ github.event.inputs.npm_otp }}