Fix bug injection setpoint shunt compensator can be applied

[pjeanmarie]

Please check if the PR fulfills these requirements

• [ ] The commit message follows our guidelines
• [x] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem?

No

What kind of change does this PR introduce?

Bug fix

What is the current behavior?

Injection set point on shunt compensator cannot be applied (called by network action apply) if the setpoint is equal or below the max section count of the shunt compensator.

What is the new behavior (if this is a feature change)? Injection set point on shunt compensator cannot be applied (called by network action apply) if the setpoint is strictly above the max section count of the shunt compensator.

Does this PR introduce a breaking change or deprecate an API?

• [ ] Yes
• [x] No

[pet-mit]

please fill PR description

[pjeanmarie]

please fill PR description

It change the behavior but it is a bug fix, so is it a breaking change?

[pet-mit]

please fill PR description

It change the behavior but it is a bug fix, so is it a breaking change?

no, not a breaking change