3.11 regression: undeclared tslib dependency

[martinpitt]

Starting with 3.11, node_modules/less/dist/less.cjs.js does require('tslib'), but less' package.json does not declare this as a dependency.

This now causes project builds to fail like this:

ERROR in ./lib/form-layout.less
Module build failed: Error: Cannot find module 'tslib'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (/build/cockpit-project/bots/make-checkout-workdir/cockpit/node_modules/less/dist/less.cjs.js:3:13)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
...

[matthew-dean]

Duplicate of #3469