Improve node detection

[Neylix]

Description

Fixes #604

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

To test hard timeout:

• Run 3 nodes and wait them to be authorized
• Update the runtime of one node to change the price received by coingecko api, as so transactions will failed and node detection will be triggered until hard_timeout

in lib/archethic/oracle_chain/services/uco_price/providers/coingecko.ex replace the function fetch like this :

def fetch(pairs) when is_list(pairs) do
  {:ok, %{"eur" => 10, "usd" => 10}}
end

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules