chore: Use en-US as default locale for F-Droid (#21714)

In Google Play and App Store, it is desirable to use en-GB (English UK) as the
default locale for legal reasons. We heard from F-Droid folks that en-GB is not
as well supported as en-US
https://github.com/status-im/status-mobile/issues/21665.

In this PR we go back to en-US as the default locale in fastlane and update the
text for English (UK) standards. Google Play and App Store shouldn’t be affected
and will use en-GB as the default locale.

Fixes https://github.com/status-im/status-mobile/issues/21665

fastlane/metadata/android/en-US/full_description.txt

@@ -6,13 +6,13 @@ SECURE ETHEREUM WALLET
 The Status crypto wallet allows you to securely send, store, and exchange Ethereum assets such as ETH, SNT, stable coins such as DAI, as well as collectibles. Confidently take control of your cryptocurrency and digital assets with our multichain Ethereum wallet app, supporting mainnet, Arbitrum, and Optimism. The Status blockchain wallet currently only supports ETH, ERC-20, ERC-721, and ERC-1155 assets; it does not support Bitcoin.
 
 PRIVATE MESSENGER
-Send private 1:1 and private group chats without anyone snooping on your communications. Status is a messenger app that eliminates centralised message relays for greater privacy and secure messaging. All messages are encrypted with end-to-end encryption. Additionally, no message exposes who the author or the intended recipient is, so nobody, not even Status, knows who is talking to who or what was said.
+Send private 1:1 and private group chats without anyone snooping on your communications. Status is a messenger app that eliminates centralized message relays for greater privacy and secure messaging. All messages are encrypted with end-to-end encryption. Additionally, no message exposes who the author or the intended recipient is, so nobody, not even Status, knows who is talking to who or what was said.
 
 EARN WITH DEFI
-Put your crypto to work with the latest decentralised finance apps and decentralised exchanges (DEX) such as Maker, Aave, Uniswap, Synthetix, PoolTogether, Zerion, Kyber, and more.
+Put your crypto to work with the latest decentralized finance apps and decentralized exchanges (DEX) such as Maker, Aave, Uniswap, Synthetix, PoolTogether, Zerion, Kyber, and more.
 
 CONNECT WITH YOUR COMMUNITY
-Explore, connect, and chat with your favourite communities and friends. Whether it is a small group of friends, an artist collective, crypto traders, or the next big organization - text and communicate with Status communities.
+Explore, connect, and chat with your favorite communities and friends. Whether it is a small group of friends, an artist collective, crypto traders, or the next big organization - text and communicate with Status communities.
 
 PRIVATE ACCOUNT CREATION
 Stay private with pseudo-anonymous account creation. When creating your free account, you will NEVER have to enter a phone number, email address, or bank account. Your wallet private keys are locally generated and securely stored to ensure only you have access to your funds and financial transactions.