Add ReserveMaxCap mimir to override EmissionCurve

Summary

• Added new operational mimir ReserveMaxCap to control EmissionCurve behavior
• When reserve rune balance exceeds ReserveMaxCap, EmissionCurve is overridden to default value (6)
• ReserveMaxCap defaults to 0 (disabled state)

Changes

• Added ReserveMaxCap constant to constants/constant_values.go
• Added default value (0) in constants/constants_v1.go
• Implemented override logic in manager_network_current.go
• Updated auto-generated files via make generate