fix: display sensitivity prompt only for item definition

[aviatco]

✨ Description of new changes

Fix #127

This pull request refactors how the CLI determines when to display the sensitive label prompt, when retrieve item definitions versus metadata-only queries. It introduces a utility function to centralize this logic, updates all relevant code paths to use it, and adds comprehensive tests. This ensures that sensitivity label prompts are only shown when definition data is requested, improving both correctness and maintainability.

Definition retrieval logic centralization:

• Added a new utility function should_retrieve_definition in fab_cmd_get_utils.py to determine when a query requires retrieving the item's definition, consolidating and clarifying the logic for handling sensitive data.
• Updated all code paths in fab_fs_get_item.py and fab_fs_get.py to use the new utility function, replacing previous ad-hoc checks and removing direct references to ITEM_METADATA_PROPERTIES. [1] [2]

Code cleanup and simplification:

• Removed the now-unnecessary ITEM_METADATA_PROPERTIES constant from fab_constant.py, since this information is encapsulated in the new utility function.
• Refactored imports in affected files to use the new utility function and remove unused imports. [1] [2]

Testing and documentation:

• Added a comprehensive test suite for should_retrieve_definition covering a wide range of query scenarios and edge cases, ensuring robust and predictable behavior.

Changelog:

• Updated the changelog to note that the sensitivity label prompt is now displayed only when the item definition is requested.# 📥 Pull Request

[may-hartov]

we can remove all of these cases and just keep 1 or 2

[ohadedry]

Please update description to reflect latest changes

[ohadedry]

Please update the comment to reflect the changes