DX-1264: Unify exports

[ytkimirti]

This PR introduces some small tweaks to unify some parts of our javascript packages. Here are the changes:

• Updated tsup config
• Remove unnecessary flag from ci
• Updated exports field in package.json

I removed all the custom platform exports because they were never used. Since there are "import" and "require" fields, when an import is happening, all other fields are ignored.

 ".": {
      "import": "./dist/nodejs.mjs",
      "require": "./dist/nodejs.js",
      "types": "./dist/nodejs.d.ts",
      ...
}

Here is the before and after output coming from the attw cli:

[linear]

DX-1264 Unify js packet configs and publishing workflows

[CahidArda]

can we get the same report as the screenshot from upstash/redis-js#1290?