Not using all 3 phases of sine filter
For operation on VFD, a single-phase motor must not be the capacitor-start type. It must be the permanent split capacitor (PSC) or the shaded-pole type. The load must have low torque at low speed as with a fan or centrifugal pump. Adding a sine filter will not alter those restrictions. A sine filter would prevent damage from insulation stress due to PWM switching transient ringing. Using the three-phase filter will probably not harm anything and may be of some benefit. If the VFD is near the motor, a filter is probably not needed.

There is a manufacturer of VFDs for single-phase motors that claims to have features to allow more latitude with motor design and load type.

Re Comments

You may have alternatives other than a VFD. A frequency changer may be a better alternative. The motor may operate reliably at 230 V, 60 Hz, but the speed would increase by 20%. If the load is a fan or centrifugal pump, the load torque would increase by 44% because of the increased speed and almost certainly overload the motor.