fix: remove trailing commas from function calls

[justlevine]

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What does this implement/fix? Explain your changes.

This PR removes the usage of trailing commas, which throw a fatal error in PHP 7.2 and lower.

Branch is based off of #763, which should be merged first.

Does this close any currently open issues?

…

Any relevant logs, error output, GraphiQL screenshots, etc?

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Any other comments?

Audited with WPGraphQL Coding Standards.

Note: This is not caught by PHPStan since our composer file is built on 7.3 for our dev-deps to work.

Where has this been tested?

• WooGraphQL Version: 0.14.1
• WPGraphQL Version: 1.14.6
• WordPress Version: 6.2.2
• WooCommerce Version: 7.8.2

[kidunot89]

Looks good to me