[BUG] Tag name not displayed when deleting

[mjabascal10]

Describe the bug
Tag name appears as 'undefined' when deleting from the Thread Management.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Threat Management->Alerts' menu
2. Click on Manage Tag
3. Create a tag and try to delete it

Expected behavior
It should display the following message: Are you sure that you want to delete the tag: [name of the created tag]?

Screenshots
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