Some sharing settings are not inherited from the Teams to the channels,

E.g. disabling company wide sharing are not inherited and if it’s disabled at the teams level it needs to be done for associate channels.

$domain = "contoso"
    $teamName = @(
        "test",
        "CTO"
      )
$clientId = "xxxx"
$adminSiteURL = "https://$domain-Admin.SharePoint.com"
Connect-PnPOnline -Url $adminSiteURL -ClientId $clientId

$teamName | ForEach-Object {
    $team = Get-PnPTeamsTeam -Identity  $_
    $m365GroupId = $team.GroupId
    Get-PnPTenantSite | Where-Object { $_.Template -eq 'TEAMCHANNEL#1' -and $_.RelatedGroupId -eq $m365GroupId  } | ForEach-Object{
        $site = $_
        $siteUrl = $site.Url
        Connect-PnPOnline -Url $siteUrl
       Set-pnptenantsite -url $siteUrl  -DisableCompanyWideSharingLinks Disabled
    }
}