[RFC] Set NODE_ENV from Vite's mode

During bundling with Vite it has:

• mode Vite param - changes Vite bundling process, e.g., optimization, minification
• NODE_ENV env - changes some dependencies, e.g., vue's prod or dev version with

It is not a problem when vite + vite build is used. But we usually use vite build for both. It requires more complex scripts (and not cross-platform):

"build": "vite build",
"dev": "NODE_ENV=development vite build --mode development",
"watch": "NODE_ENV=development vite build --mode development --watch"

We never use different NODE_ENV and mode values.

Proposal: set NODE_ENV inside Vite config according to the mode to simplify "scripts" and avoid issues from lost NODE_ENV.