Set EVM currency existential deposit to 1

[MOZGIII]

Closes #781.

• Set EVM currency existenial deposit to 1 #781

Waits for #785 to land before merging.

[dmitrylavrenov]

Should we research and properly run migrations at this PR?

[MOZGIII]

Should we research and properly run migrations at this PR?

Let's discuss

[dmitrylavrenov]

Spent time on research in a little:

• Balances and EvmBalances don't have some migration logic. Anyway, in case new ED is less than an older one then it doesn't influence on accounts creation/deletion during runtime upgrade
• Checked that we should update bridges initializer version - 53f319e

[MOZGIII]

So, this should just work, right? I don't see why not... However, we'll have to test extensively through try-runtime and on the internal testing stages before we ship even to testnet.

[dmitrylavrenov]

So, this should just work, right? I don't see why not... However, we'll have to test extensively through try-runtime and on the internal testing stages before we ship even to testnet.

Yes, this should. Right, agree with the way of testing.