Display the amount for Hashed Storage migration/rollback correctly

What does this MR do?

Rake script considers the specified range, if present, to calculate the affected amount of projects correctly.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Closes #63667 (closed)