Increase node template max block weight

[JoshOrndorff]

This PR increases the node template's maximum block weight from 1 million (1_000_000) to 1 billion (1_000_000_000) to match the main Substrate node. The former lower weight is the exact weight of a balance transfer which means that after a timestamp is in the block there isn't enough room left for even a single balance transfer.

A mystery that I haven't solved is why this just became a problem when none of those weight have changed in 9 months since #3157

Cross reference: https://github.com/substrate-developer-hub/substrate-node-template/pull/25

Dumb question: Does this require a spec version bump? I think it does.

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[kianenigma]

A mystery that I haven't solved is why this just became a problem when none of those weight have changed in 9 months since #3157

I think the weights were one average lower in my old initial PR and this was okay. Transfer was probably 10_000 or sth.

[JoshOrndorff]

Just want to double check on my question before I merge.

Does this require a spec_version bump?

Initially I was thinking it did need one, but I'm thinking the node template runtime should always stay at version 1 and when individual projects start building from the template, then they can start bumping the version.

[riusricardo]

Initially I was thinking it did need one, but I'm thinking the node template runtime should always stay at version 1 and when individual projects start building from the template, then they can start bumping the version.

@JoshOrndorff AFAIK you are correct here and there is no need to pump the version.