Passing variables that contain HTML through the t() function - ! placeholder has been removed

In Drupal 8, it appears that using the ! (exclamation mark) placeholder with the t() function has been removed.

I have a variable that contains HTML:

<span class="fullname_wrapper"><span class="first_name">John</span> <span class="last_name">Hancock</span> <span class="account_name_wrapper">(@JohnH)</span></span>

I want to keep this HTML, as it will be styled specifically wherever it appears on the site.

In Drupal 7, I was able to do this:

t('Your name is !name', array('!name' => $name));

In which $name contains the HTML shown above. However, in Drupal 8, this doesn't work since the exclamation mark pass-through placeholder has been removed.

I tried this:

t('Your name is :name', array(':name' => $name));

But of course, the HTML is escaped.

The @ mark also escapes the HTML.

Does anyone know how HTML can be passed through the t() function in D8?