[keymgr] Fix for lc disable during init.
[keymgr] Fix for lc disable during init.

- Fixes #8042
- Make the behavior of lc disable during init consistent with others.
- When an lc disable is encountered during init, do not complete
  the init transaction and instead go to wipe key and report
  invalid operation.

Signed-off-by: Timothy Chen <d7b2ae30d8c0f215facd721941273067fd1d14a2@google.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan