✨ Description of Change

A concise summary of what is being changed. Please provide enough context for reviewers to be able to understand the change and why it is necessary. If the issue/ticket already provides enough information, you can put "See ticket" as the description.

Link to GitHub issue or Jira ticket: OBPIH-6624

Description:
This is a small UI change where we want to display an empty cell instead of a default value which is a "-". I noticed that on DateCell components we do not have a customizable prop for this value so I implemented it and made appropriate changes to the Full outbound workflow table expiration date column

📷 Screenshots & Recordings (optional)

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📈 Test Plan

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• Frontend automation tests (unit)
• Backend automation tests (unit, API, smoke)
• End-to-end tests (Playwright)
• Manual tests (please describe below)
• Not Applicable

Description of test plan (if applicable):

✅ Quality Checks

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• The pull request title is prefixed with the issue/ticket number (Ex: [OBS-123] for Jira, [#0000] for GitHub, or [OBS-123, OBPIH-123] if there are multiple), or with [N/A] if not applicable
• The pull request description has enough information for someone without context to be able to understand the change and why it is needed
• The change has tests that prove the issue is fixed / the feature works as intended