🐛 Fixed table constraint error when updating member's email with an already existing email (#12178)
🐛 Fixed table constraint error when updating member's email with an already existing email (#12178)


closes #12045

- When member's email is updated to an already existing email of different member it caused table's unique constraint error, which was not handled properly. 
- Added handling for this error similar to one in members `add` method.
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