fix: Snippet config extra params reactivity

[annacv]

Pull request template

This PR checks if the extra params object has really changed to avoid unnecessary event emissions.

Motivation and context

In some customers, when a snippetConfig callback is executed, ExtraParamsProvided and ExtraParamsChanged events are fired even if they have not changed (and, as a consequence all the rest of the chained events that react to ExtraParamsChanged event emission).

• Dependencies. If any, specify:
• Open issue. If applicable, link: RST-2269

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that causes existing functionality to not work as expected)
• Change requires a documentation update

What is the destination branch of this PR?

• Main
• Other. Specify:

How has this been tested?

An open PR can be used to see the implementation when a callback is executed & check:

• No events are emitted if the extraParams object has not changed
• No unnecessary endpoint calls (regarding chained events).

Tests performed according to testing guidelines:

Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review on my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.