[Feature]: browsers package: "install chromium" should have the same outcome as "install chrome"

[thiagowfx]

Feature description

$ npx @puppeteer/browsers install chromium@latest
browsers install <browser>

Download and install the specified browser

Positionals:
  browser  The browser version                               [string] [required]

Options:
  --version   Show version number                                      [boolean]
  --help      Show help                                                [boolean]
  --platform  Platform that the binary needs to be compatible with.
       [string] [choices: "linux", "mac", "mac_arm", "win32", "win64"] [default:
                                                      Auto-detected by default.]
  --path      Path where the browsers will be downloaded to and installed from
                             [string] [default: "/private/tmp/tperrotta-yCeS9U"]

TypeError: browsers_js_1.downloadUrls[browser] is not a function
    at getDownloadUrl (/Users/tperrotta/.npm/_npx/c99440fc2d0a3f00/node_modules/@puppeteer/browsers/lib/cjs/fetch.js:87:55)
    at fetch (/Users/tperrotta/.npm/_npx/c99440fc2d0a3f00/node_modules/@puppeteer/browsers/lib/cjs/fetch.js:40:17)
    at Object.handler (/Users/tperrotta/.npm/_npx/c99440fc2d0a3f00/node_modules/@puppeteer/browsers/lib/cjs/CLI.js:80:40)

Observed: install chromium does not work
Expected: install chromium should work, and have the same effect as install chrome.

Why? install chrome actually installs Chromium under the hood. Therefore one would expect that install chromium would also do so.