* feat: add new linea mainnet network
* fix: removed unused condition + lint code
* fix: update tests + fix network tab issue
* feat: add feature toggle for linea mainnet
* fix: add feature toggle for linea mainnet
* feat: add linea mainnet logo
* update @metamask/eth-json-rpc-infura package to support linea networks
* update linea mainnet block explorer url
* fix: refactor linea mainnet feature toggle
* fix: update linea mainnet chain id and rpc url
* fix: update settings-search unit test
* fix: update linea mainnet feature flag
* fix: remove useless async function keyword for linea mainnet feature flag
