feat(slice): enhance slice bounds analysis with dynamic bounds handling (#1457)

* feat(slice): enhance slice bounds analysis with dynamic bounds handling

* feat(slice): enhance extractLenBound to support additional offset patterns and improve slice bounds analysis

* golangci-lint run

* Improve G602 slice bounds detection: support 3-index slices and correct capacity tracking

* Support out-of-bounds detection for range loops with offsets

Author: oittaa