Revert ignore case for reference provisioning

[EpsilonTal]

Revert Ignore Case for Instance Reference Selectors

Motivation

We do want to be case-sensitive for reference-instance provision by selectors.

Approach

Revert to the original selector feature without the ignore case named-queries.

Pull Request status

• [x] Initial implementation
• [x] Refactoring
• [x] Unit tests
• [x] Integration tests