Disable new BPT key format for core validators
Do not use the new BPT key format for key validators, to ensure a 1.3.0 node can switch back to 1.2. This can be reverted once 1.3 is activated.
Do not use the new BPT key format for key validators, to ensure a 1.3.0 node can switch back to 1.2. This can be reverted once 1.3 is activated.