Add "User Login Filter" input to the LDAP auth provider config

[rak-phillip]

Summary

This adds the "User Login Filter" input to the LDAP config form.

Fixes #13419

Occurred changes and/or fixed issues

• Add "User Login Filter" input to the LDAP config form
• Re-flow form contents (requires manually shifting each input by one)

Technical notes summary

Because this change include moving form elements around, I recommend reviewing each commit one at a time.

Areas or cases that should be tested

• Active Directory
• OpenLDAP
• FreeIPA

Areas which could experience regressions

• NA

Screenshot/Video

Checklist

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