Disable action buttons right after a request

[Anike Arni]

The current action buttons in the inbox don't give any feedback for the user as to whether the action was performed or not. So, users might click multiple times in the same action button. This is causing conflicting requests that lead to type errors, such as: https://0xacab.org/leap/bitmask-dev/issues/8820

Acceptance criteria

Given I've selected an email, when I click on the delete button, it should be disabled until I get a success or failure message.