Random password is generated without special characters

[rsjr]

Description:

The random password generated in the "Admin -> Users" panel is created only with letters/numbers (a-Z / 0-9). No special characters are added.

This is a problem when setting "At Least One Symbol" is active (Admin -> Accounts -> Password Policy), as the user will receive via email a password which is actually not valid.

Steps to reproduce:

1. Admin User -> enable password policy and At Least One Symbol settings
2. Admin User -> go to user panel and generate a random password for the end user
3. End user -> tries to login with the random password received via email. Password gets rejected as it does not have the special chars.

Expected behavior:

Password to be generated following the password policy set on "Accounts"

Actual behavior:

Server Setup Information:

• Version of Rocket.Chat Server: reproduced on both 3.2.2 and 3.3.0-develop