Fix: Added the backend validation for name (#3878)

- Added the backend validation for name
- Add message size constraint

app/models/account.rb

@@ -33,6 +33,7 @@ class Account < ApplicationRecord
 
   validates :name, presence: true
   validates :auto_resolve_duration, numericality: { greater_than_or_equal_to: 1, less_than_or_equal_to: 999, allow_nil: true }
+  validates :name, length: { maximum: 255 }
 
   has_many :account_users, dependent: :destroy_async
   has_many :agent_bot_inboxes, dependent: :destroy_async