Extract in-template arrow functions to a method

What does this MR do and why?

Resolves #418767 (closed) by extracting the two duplicate in-template arrow functions into a method. This ensures that the function is optimized by Vue's template compiler and doesn't have to be recreated on each render.

Screenshots or screen recordings

No visual or functional change.

How to set up and validate locally

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MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.