Ensure disable private check cmd line option disables runtime private access checks

[Akirathan]

Fixes #9882

Pull Request Description

Ensure that --disable-private-check cmd line option disables the runtime private access checks as well. So far, only private constructor invocations are checked.

Important Notes

Polyglot (foreign) code still cannot see private members of Enso objects, even when private checks are disabled. The --disable-private-check cmd line option shall work only for Enso code. Let's keep the private members of Enso objects hidden for the foreign polyglot code.

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• The documentation has been updated, if necessary.
• Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• All code follows the
  Scala,
  Java,
  TypeScript,
  and
  Rust
  style guides. In case you are using a language not listed above, follow the Rust style guide.
• Unit tests have been written where possible.