feat(ssm-parameter-wo): improve management of ignore_value_changes

[nhs-oliverslater]

Description

Enhance the management of SSM parameters by introducing new functionalities and optimizing existing processes.

Context

These changes are necessary to improve the efficiency and usability of SSM parameter handling, addressing limitations in the current implementation.

Type of changes

• Refactoring (non-breaking change)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would change existing functionality)
• Bug fix (non-breaking change which fixes an issue)

Checklist

• I am familiar with the contributing guidelines
• I have followed the code style of the project
• I have added tests to cover my changes
• I have updated the documentation accordingly
• This PR is a result of pair or mob programming

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Sensitive Information Declaration

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• I confirm that neither PII/PID nor sensitive data are included in this PR and the codebase changes.