[DEV-4267] Update Inverter control config names

[vincewhite]

Description

Refactors the following work package request fields to snake case:
beforeCutOffProfile -> before_cut_off_profile
afterCutOffProfile -> after_cut_off_profile

Associated tasks

NA

Test Steps

Explain in detail how your reviewer can test the changes proposed in this PR. If it cannot be tested, leave an explanation on why.

Checklist

If any of these are not applicable, strikethrough the line ~like this~. Do not delete it!. Let the reviewer decide if you should have done it.

Code

• I have performed a self review of my own code (including checking issues raised when creating the PR).
• I have added/updated unit tests for these changes, and if not I have explained why they are not necessary.
• I have commented my code in any hard-to-understand or hacky areas.
• I have handled all new warnings generated by the compiler or IDE.
• I have rebased onto the target branch (usually main).

Security

When developing applications, use following guidelines for information security considerations:

• Access to applications should be protected with security keys/tokens or usernames and passwords;
• All sessions are encrypted if possible;
• All application input is sanitised before being acted on (ie SQL statements, etc);
• Log messages, and especially client-facing ones, must be handled securely and must not leak credentials information (internal URLs, passwords, tokens).

• I have considered if this change impacts information security and made sure those impacts are handled.

Documentation

• I have updated the changelog.
• I have updated any documentation required for these changes.

Breaking Changes

• I have considered if this is a breaking change and will communicate it with other team members by posting it on the Slack breaking-changes channel.

Breaking existing code setting these fields in the work package request will need to be updated.

[ryanjcoleman]

Task linked: DEV-4267 Update Advanced PV configuration names in EAS Python client