`DocLocator` validation for all fetching documents from provider

[Mr-Leshiy]

Summary

Properly apply DocLocator check while fetching a referenced document from the CatalystSignedDocumentProvider during the validation process.

Description

• Update referenced_doc_id_and_ver_check renaming it to referenced_doc_ref_check and add additional validation

fn referenced_doc_ref_check(
    ref_doc: &CatalystSignedDocument,
    original_doc_ref: &DocumentRef,
    field_name: &str,
    report: &ProblemReport,
) -> bool {
    let Ok(doc_ref) = ref_doc.doc_ref() else {
        report.functional_validation(
            ...
        );
        return false;
    };

    if &doc_ref != original_doc_ref {
        report.invalid_value(
            ...
        );
        return false;
    }

    true

}

• Add test case scenario with corrupting DocLocator part in the DocumentRef
• Update ChainRule::check with using doc_refs_check, instead of manually calling provider.try_get_doc