[2175983] Improve the delete button and the text on delete modal for bootable volumes

Description of problem:
Follow up the discussion in the EPIC scrub meeting:
1. The delete button for bootable volumes is not deleting the dataSource and the PVC, it just deletes labels from the volumes. It might cause confusion because if the user don't read it and deleted the volume, user cannot add a volume with the same name again, the bug #2175972 is opened for it already. Because of this issue, we may want to change the delete button to another name, like “Remove parameters” or “Remove labels”.

2. The text in the modal is
"Please note that only the labels data will be deleted and that the bootable volume will remain. Are you sure you want to delete the labels for bootable volume rhel9?"

"the bootable volume will remain" is not correct because the volume is not in the list after delete it.

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