prompt switch network only before transaction signing

[Viterbo]

Fixes #515

Description

This PR includes a new function assertNetworkConnection for the account store that will prompt the user to change the network and block the code until the user either refuses or accepts and effectively changes the network.

It also removes the code responsible for warning the user that a network switch has been detected because we don't need it if we are only displaying data. However, when the user tries to sign a transaction we need to explicitly check the network and prompt the user to change it.

Test scenarios

• Login using Metamask
• Once logged, open Metamask, change the network and come back to the web app
  • you should not get any notification
  • you should be able to explore all sections and your data should be correct
• got to any transaction page and try to perform one: e.g. liquid staking (STLOS)
  • you should be prompted to change the network
  • if you refuse to switch the network, the transaction cancels quietly
  • if you cancel the switch you get a neutral notification
  • if you accept and continue until effectively change the network, the transaction should go on without the need for you to hit the action button again.

Screnn captures

teloscan--switch-chains.webm

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have cleaned up the code in the areas my change touches
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings
• I have removed any unnecessary console messages
• I have included all english text to the translation file and/or created a new issue with the required translations for the currently supported languages
• I have tested for mobile functionality and responsiveness
• I have added appropriate test coverage

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[donnyquixotic]

@Viterbo

• Remove the switch notification altogether, add a network check and switch prompt to any signed transaction

• remove network switch prompt on autologin

[ezra-sg]

👌 very nice