Some fixes included in this PR are:

• Copy fix on inactivity_ttl field in the template schedule settings page
• We now disable the locked_ttl field in the template schedule settings page if inactivity_ttl is not set
• We now disable all template schedule form fields upon submission
• Previously, the warning dialog shown if workspaces will be immediately marked for deletion was not scoped to the template on which inactivity_ttl was being set - we have added that filter
• Previously, the warning dialog was not handling pluralization correctly; now it does
• We now only show the warning dialog if locked_ttl is set; however, more work will have to be done here once the BE logic for locked workspaces is in place
• Fixed a bug where the ImpendingDeletionBanner component appeared only on certain workspace table pages; now it shows constantly (unless dismissed)