Get-DbaDbMailServer: Fix e-mail account names if more than one account exists

[VitalKoshalew]

Fix an error that results in all account names matching the first account instead of corresponding to real account names.

Type of Change

• Bug fix (non-breaking change, fixes Get-DbaDbMailServer shows incorrect e-mail account names if more than one account exists. #9496 )

Purpose

Fix an error that results in all account names matching the first account instead of corresponding to real account names.

Approach

Each corresponding account name is used instead of the only using first account name for all results.

[andreasjordan]

Test failes:

Describe : dbatools style
Context  : formatting
Name     : It Get-DbaDbMailServer.ps1 is not compliant with the OTBS formatting style. Please run Invoke-DbatoolsFormatter against the failing file and commit the changes.
Result   : Failed
Message  : Expected 0, but got 1.

[potatoqualitee]

Unfortunately, this is an old copy of the repo and it's too large. I have to close it. Please delete your local repo and reclone for the smaller version. Till then, I will cherry pick your changes and then resubmit them under a new PR.