Add weight filter token to work items list

What does this MR do and why?

Add weight filter token to work items list

• Enable weight filtering in work items list when hasIssueWeightsFeature is true
• Add WeightToken component with standard filtering options (=, !=, None, Any)
• Include comprehensive test coverage for weight token functionality

Changelog: added EE: true

References

Relates to #556196 (closed) #536876 (closed)

Screenshots or screen recordings

Screen_Recording_2025-07-22_at_4.39.59_PM

Before	After

How to set up and validate locally

• Go to project work items
• Set weight to few
• Filter by weight and validate

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #556196 (closed)