"Update selected" option to accompany Update All

**Describe the problem you have/What new integration you would like**

I don't always want to update all of the devices at the same time (especially in case some power devices get reset and turn off the plugs).

**Please describe your use case for this integration and alternatives you've tried:**

Imagine you have devices like a dishwasher/fridge/any other device drawing current. You have that connected to a power plug. You run an update - the plug resets cutting power off from the device (even if for just a second until it turns back on - depending on it's resume power setting).

Right now, I'm just manually going item by item with devices I know can be upgraded together and pick the right time to upgrade those critical ones.

I would like a checklist to become available where I can chose which multiple devices can get updated in bulk.

**Additional context**

No file, test, or entry point is named in the request. Start by locating the existing “Update All” control and its device-selection flow; done means users can select multiple devices and update only that selection without updating the rest.

Written by the indexing model from the issue text.