Fix OgImage unique constraint conflict on resource registration

[madisoncarter1234]

Summary

• Change create to connectOrCreate for ogImages in the create branch of upsertOrigin
• This allows multiple origins to share the same OG image URL without violating unique constraints
• Aligns the create branch behavior with the update branch which already uses upsert

Fixes #287

Test plan

• Register Resource A with URL that has a specific OG image
• Register Resource B from a different origin that shares the same OG image URL
• Verify both registrations succeed without unique constraint errors

[vercel]

@madisoncarter1234 is attempting to deploy a commit to the Merit Systems Team on Vercel.

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[shafu0x]

did you test this?