Improve test clarity

[andrey-helldar]

What:

• Bug Fix
• New Feature

Description:

This pull request includes the following updates:

• Enhanced test datasets with descriptive keys and descriptions for improved clarity and purpose.
• Removed redundant and unused files (feed_activate_migration.stub and feed_activate_operation.stub).
• Added new unit tests for transformers to expand coverage.
• Cleaned up redundant secondary-label references in the directives topic.
• Updated summaries in documentation topics to ensure clarity and consistency.
• Added and revised documentation for directives, location, and eloquent topics to improve comprehension and accuracy.

Related:

No related issues.