Resolve "Usage Data name suggestion returns a number"

What does this MR do?

Fix bug on name suggestion generator

Before

# more approvers

Gitlab::Usage::Metrics::NamesSuggestions::Generator.generate('usage_activity_by_stage_monthly.create.approval_project_rules_with_more_approvers_than_required')
=> 129

# less_approvers

Gitlab::Usage::Metrics::NamesSuggestions::Generator.generate('usage_activity_by_stage_monthly.create.approval_project_rules_with_less_approvers_than_required')
=> 129

After

# more approvers 

Gitlab::Usage::Metrics::NamesSuggestions::Generator.generate('usage_activity_by_stage_monthly.create.approval_project_rules_with_more_approvers_than_required')
=> "count_<adjective describing: '(approval_project_rules.rule_type = 0)'>_approval_project_rules_<with>_approval_project_rules_users"


 # less approvers

Gitlab::Usage::Metrics::NamesSuggestions::Generator.generate('usage_activity_by_stage_monthly.create.approval_project_rules_with_less_approvers_than_required')
=> "count_<adjective describing: '(approval_project_rules.rule_type = 0)'>_approval_project_rules_<with>_approval_project_rules_users"

Does this MR meet the acceptance criteria?

Conformity

• 📋 Does this MR need a changelog?
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• Documentation (if required)
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• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team

Related to #330109 (closed)