Add disclaimer on EVM sidechains pages (#1821)

* Add note that the EVM sidechains is a PoC and for development purposes only

* Changed sent to send in last sentence.

* Incorporate peer feedback

---------

Co-authored-by: Dennis Dawson <Dennis.s.dawson@gmail.com>

content/tutorials/interoperability/connect-metamask-to-xrpl-evm-sidechain.md

@@ -8,6 +8,8 @@ status: not_enabled
 ---
 # Connect MetaMask to XRP Ledger Sidechain
 
+{% include '_snippets/evmsc-disclaimer.md' %}
+
 MetaMask is an extension for accessing Harmony-enabled distributed applications (_dapps_) from your browser. The extension injects the XRP Ledger EVM sidechain Web3 API into every website's Javascript context, so that Web3 applications can read from the blockchain. <!-- SPELLING_IGNORE: dapps -->
 
 This tutorial walks through the process of installing MetaMask, configuring it on the XRP Ledger EVM sidechain network, and importing an existing account using a previously generated private key.

content/tutorials/interoperability/evm-sidechain-run-a-validator-node.md

@@ -8,6 +8,8 @@ status: not_enabled
 ---
 # Run a Validator Node on an EVM Sidechain
 
+{% include '_snippets/evmsc-disclaimer.md' %}
+
 ## Create Your Validator
 
 Use your node consensus public key (`exrpvalconspub...`) to create a new validator by staking XRP tokens. You can find your validator public key by running:

content/tutorials/interoperability/evm-sidechain-validator-security.md

@@ -8,6 +8,8 @@ status: not_enabled
 ---
 # EVM Sidechain Validator Security
 
+{% include '_snippets/evmsc-disclaimer.md' %}
+
 Each validator candidate is encouraged to run its operations independently, as diverse setups increase the resilience of the network. Validator candidates should begin their setup phase now, to be on time for launch.
 
 ## Horcrux

content/tutorials/interoperability/get-started-evm-sidechain.md

@@ -8,6 +8,8 @@ status: not_enabled
 ---
 # Get Started with the EVM Sidechain
 
+{% include '_snippets/evmsc-disclaimer.md' %}
+
 This getting started tutorial walks you through the steps to set up your account and submit a transaction using the EVM sidechain bridge. 
 
 ## 1. Create an Account Using an EVM Compatible Wallet

content/tutorials/interoperability/join-evm-sidechain-devnet.md

@@ -8,6 +8,8 @@ status: not_enabled
 ---
 # Join the XRP Ledger EVM Sidechain Devnet
 
+{% include '_snippets/evmsc-disclaimer.md' %}
+
 This tutorial walks you through the steps to join the existing **XRP Ledger EVM Sidechain Devnet**. 
 
 For ease of use, create an alias, `exprd`, to run all commands inside your Docker container.