fix(MWPW-147600): stabilize date sorting for cards with identical dates

[sanrai]

Fixed an issue where cards with identical dates would shift positions when clicking the sort dropdown without changing the sort option. Added a secondary sort using card IDs to ensure stable ordering when dates are identical.

Problem:

• Cards with the same date were sorting inconsistently when the sort dropdown was toggled
• The unstable sorting created a jarring user experience with cards shifting positions unnecessarily

Solution:

• Added card ID as a secondary sort key when dates are identical
• Updated unit tests to explicitly test sorting stability
• Maintained existing sort behavior for cards with different dates

Testing:

• Verified cards with identical dates maintain consistent order
• Confirmed existing sort behavior works correctly for different dates
• Updated unit tests pass with explicit stability checks

Ticket: https://jira.corp.adobe.com/browse/MWPW-147600

[github-actions]

Core Web Vitals Metrics

Metric	Value
LCP	10638.90 s
FID	0.70 ms
CLS	N/A

Recorded at: 2024-12-04T02:58:05.667Z
PR: #210

[github-actions]

Core Web Vitals Metrics

Metric	Value
LCP	11457.50 s
FID	0.90 ms
CLS	N/A

Recorded at: 2024-12-04T02:58:20.186Z
PR: #210

[github-actions]

Core Web Vitals Metrics

Metric	Value
LCP	10390.50 s
FID	0.90 ms
CLS	N/A

Recorded at: 2024-12-04T03:00:06.079Z
PR: #210

[github-actions]

Core Web Vitals Metrics

Metric	Value
LCP	10680.30 s
FID	0.80 ms
CLS	N/A

Recorded at: 2024-12-04T03:01:39.053Z
PR: #210

[github-actions]

Core Web Vitals Metrics

Metric	Value
LCP	10535.80 s
FID	0.80 ms
CLS	N/A

Recorded at: 2024-12-04T03:09:16.230Z
PR: #210

[github-actions]

Core Web Vitals Metrics

Metric	Value
LCP	10431.90 s
FID	0.80 ms
CLS	N/A

Recorded at: 2024-12-12T22:24:41.006Z
PR: #210