Fix member error if no suggestions

[gaspergrom]

Changes proposed ✍️

What

🤖 Generated by Copilot at 2e71cd7

Fixed a bug in member-merge-suggestions-page.vue that caused an error when the members array had only one element. Added a condition to check the array length before comparing the members.
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🤖 Generated by Copilot at 2e71cd7

members array
check length before compare
autumn leaves falling

Why

How

🤖 Generated by Copilot at 2e71cd7

• Add a condition to prevent index out of bounds error when comparing members to be merged (link)

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screehshots to the PR description for relevant FE changes
• New backend functionality has been unit-tested.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.