Create new panel AgenticAdoptionFunnel with title
## TL;DR
Add new panel that is guarded behind feature flag with title.
## Implementation Details
1. Guard behind feature flag: `security_dashboard_agentic_adoption`
2. On group and project security dashboard
3. Title: **SAST triage and remediation funnel**
4. On new row, number of columns: x / 12 (TBD)
5. Pass page-level filters to panel
## Testing Approach
- [x] Unit tests
- [ ] Integration tests
- [ ] Manual validation steps
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