Add mutliple webserver for mainnet and testnet in playwright config, proposal tests

[Megha-Dev-19]

Proposal tests:

• [x] Vote: Approve, Reject, Spam
• [x] Create: Text, Transfer, Function call, Add/Remove member from role
• [x] View: Votes, comments, share, more details

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Name	Status	Preview	Comments	Updated (UTC)
gateway	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 4, 2024 9:04am