[10.2.1] set default expiration date if expiration date is enforced and it is new share

[patrickjahns]

Description

Backport of #35564

Related Issue

• Fixes Public link share creation no longer automatically sets expiration date #35550

Motivation and Context

Fix this in 10.2.1

How Has This Been Tested?

• see discussion from @ckamm in set default expiration date if expiration date is enforced and it is new share #35564

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

Open tasks:

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