FINERACT-2332: Savings COB first business steps

[alberto-art3ch]

Description

Savings COB first business steps

FINERACT-2332

Checklist

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[adamsaghy]

Account locking and COB execution was refactored recently to be more optimal and performant.

Kindly asking you to rewrite Savings COB to follow these changes:

• #5944
• #5948