fix: Connect with 1 socket to new env var but still work with js debug terminal

[alii]

What does this PR do?

Fixes the connection by using a new environment variable, so the logic stays the same from previous versions of bun with BUN_INSPECT and _NOTIFY

How did you verify your code works?

Test with bun 1.1.37, as well as a local release build in both the normal terminal and the debug terminal.

It's possible I've missed a case for testing here, and in an effort to not have another botched release, it would be great if someone else could test this as well locally.

[robobun]

❌ @alii, your commit aa46c29 has 13 failures in #7043:

test/integration/next-pages/test/next-build.test.ts - 1 failing on 🍎 14 x64

test/regression/issue/09041.test.ts - 1 failing on 🐧 3.20 x64

test/js/node/test/parallel/worker-nested-uncaught.test.js - segmentation fault on 🐧 3.20 x64-baseline

test/js/node/test/parallel/worker-nested-uncaught.test.js - segmentation fault on 🐧 3.20 x64

test/integration/next-pages/test/dev-server.test.ts - 1 failing on 🐧 3.20 x64-baseline

test/integration/next-pages/test/dev-server.test.ts - 1 failing on 🐧 3.20 x64

test/js/node/child_process/child_process.test.ts - 1 failing on 🐧 3.20 aarch64

test/js/node/child_process/child_process.test.ts - 1 failing on 🐧 3.20 x64-baseline

test/js/node/child_process/child_process.test.ts - 1 failing on 🐧 3.20 x64

test/v8/v8.test.ts - 22 failing on 🐧 3.20 aarch64

test/v8/v8.test.ts - 22 failing on 🐧 3.20 x64-baseline

test/v8/v8.test.ts - 22 failing on 🐧 3.20 x64

test/js/node/test/parallel/fs-watch-recursive-linux-parallel-remove.test.js - 1 failing on 🐧 22.04 x64-baseline

test/js/node/test/parallel/fs-watch-recursive-linux-parallel-remove.test.js - 1 failing on 🐧 11 x64

test/js/node/test/parallel/fs-watch-recursive-linux-parallel-remove.test.js - 1 failing on 🐧 3.20 aarch64

test/js/node/test/parallel/fs-watch-recursive-linux-parallel-remove.test.js - 1 failing on 🐧 22.04 x64

test/js/node/test/parallel/fs-watch-recursive-linux-parallel-remove.test.js - 1 failing on 🐧 3.20 x64-baseline

test/js/node/test/parallel/fs-watch-recursive-linux-parallel-remove.test.js - 1 failing on 🐧 3.20 x64

test/cli/hot/hot.test.ts - timeout on 🐧 22.04 x64-baseline

test/cli/hot/hot.test.ts - timeout on 🐧 3.20 aarch64

test/js/bun/http/serve.test.ts - SIGTRAP on 🐧 3.20 aarch64

test/js/bun/http/serve.test.ts - SIGILL on 🐧 3.20 x64-baseline

test/js/bun/http/serve.test.ts - SIGILL on 🐧 3.20 x64

test/bundler/bundler_compile.test.ts - 1 failing on 🐧 12 x64-baseline

test/js/web/fetch/fetch-leak.test.ts - 1 failing on 🪟 2019 x64

test/regression/issue/ctrl-c.test.ts - 1 failing on 🍎 14 aarch64

test/cli/run/require-cache.test.ts - 1 failing on 🪟 2019 x64-baseline