Asset handle should be a public constant

[dingo-d]

eightshift-libs/src/Enqueue/Admin/AbstractEnqueueAdmin.php

Line 43 in f7b1595

$handle = "{$this->getAssetsPrefix()}-styles";

Sometimes, especially in plugins and places when we need to extend or reference it, like when we want to use wp_set_script_translations, we need to get the handle where we can hook into.

Currently, that's not possible. When extending the class I need to manually add this.

If this was a constant I could just reference it using self::JS_ADMIN_HANDLE or something like that. This applies to every enqueue class (theme and block).