Dynamic "const" attrs shouldn't produce updating opcodes

[chancancode]

e.g. EmberIDs

[locks]

Is this still relevant?

[NullVoxPopuli]

Is this still relevant?

[chancancode]

Maybe. Someone would need to check the updating opcode produced by something like <div data-foo={{@foo}} /> where @foo=“foo string literal”. Ideally there should be nothing to update in this case, but according to the issue it seems like it at least at one point produced an updating opcode for the attribute. Probably matters very little though. In the past when each component has an ID it probably mattered a lot more.