Fix displayName sorter in members and organizations list

[yeganathan18]

Changes proposed ✍️

What

🤖 Generated by Copilot at 372d4d8

This pull request adds or modifies the sorting functionality for the display names and the organization names in the list tables. It uses the sortable attribute of the el-table-column component and a custom opensearch query parser to achieve case-insensitive sorting for the display names.
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🤖 Generated by Copilot at 372d4d8

Sorting display names
keyword type for winter
Custom or default

Why

How

🤖 Generated by Copilot at 372d4d8

• Enable case-insensitive sorting of display names in member list table (link, link)
• Add default sorting functionality to name column in organization list table (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.