[PLA-2049] remove keepalive from transfer forms

[zlayine]

PR Type

Bug fix

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Description

• Removed the Keep Alive option from the BatchTransferForm and TransferTokenSlideover components.
• Deleted all references to keepAlive in the form data and validation schemas.
• Simplified the form structure by removing unnecessary fields.

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Changes walkthrough 📝

Relevant files

Bug fix

BatchTransferForm.vue Remove Keep Alive option from BatchTransferForm                    resources/js/components/batch/forms/BatchTransferForm.vue Removed Keep Alive checkbox from the form. Deleted simpleKeepAlive and operatorKeepAlive references. Updated validation schemas to remove keepAlive. +0/-20    TransferTokenSlideover.vue Remove Keep Alive option from TransferTokenSlideover          resources/js/components/slideovers/token/TransferTokenSlideover.vue Removed Keep Alive checkbox from the form. Deleted keepAlive reference. Updated validation schema to remove keepAlive. +0/-9

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