test: fix native addon compilation on Node.js 26 (#100819)
These failed to compiled on Nodejs 26
```
.../node_modules/native-addon install: ../addon.cc:8:35: error: 'class v8::Context' has no member named 'GetIsolate'
.../node_modules/native-addon install: 8 | v8::Isolate* isolate = context->GetIsolate();
.../node_modules/native-addon install: | ^~~~~~~~~~
.../node_modules/native-addon install: make: *** [native_addon.target.mk:108: Release/obj.target/native_addon/addon.o] Error 1
.../node_modules/native-addon install: make: Leaving directory '/vercel/path0/node_modules/.pnpm/native-addon@file+native-addon/node_modules/native-addon/build'
.../node_modules/native-addon install: gyp ERR! build error
.../node_modules/native-addon install: gyp ERR! stack Error: `make` failed with exit code: 2
.../node_modules/native-addon install: gyp ERR! stack at ChildProcess.<anonymous> (/vercel/path0/.vercel/cache/corepack/home/v1/pnpm/12.9.1/dist/node_modules/node-gyp/lib/build.js:219:23)
.../node_modules/native-addon install: gyp ERR! System Linux 6.18.49
.../node_modules/native-addon install: gyp ERR! command "/node26/bin/node" "/vercel/path0/.vercel/cache/corepack/home/v1/pnpm/12.9.1/dist/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
```
