Update LDAP password policy help message to better convey what the setting truly does

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.0 DXP FP26, 7.0.X EE, 7.0.4 CE GA5, 7.1.X, Master
• Component/s: Application Security > LDAP
• Labels:
  • liferay-digital-enterprise-70-sp5
  • liferay-fixpack-de-26-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 1
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/50428

When setting the LDAP password policy, the help message does not mention that Liferay does not import LDAP's password policy, so we're trusting that passwords are set correctly within LDAP. This setting can be found at:

Control Panel - Configuration - System Settings - LDAP Auth
Control Panel - Configuration - Instance Settings - Authentication - LDAP