Fix airdrop rate limit in compressible ctoken tests

[Copilot]

Forester compressible ctoken tests were failing with airdrop rate limit errors after a previous commit removed sleep statements.

Changes

• Added 3-second sleep before payer airdrops in test_compressible_ctoken_compression and test_compressible_ctoken_bootstrap

let payer = rpc.get_payer().insecure_clone();
// Sleep to avoid airdrop rate limit
sleep(Duration::from_secs(3)).await;
rpc.airdrop_lamports(&payer.pubkey(), 10_000_000_000)
    .await
    .expect("Failed to airdrop lamports");

The delay prevents hitting validator rate limits when funding the payer account used for compressible token configuration initialization.

Original prompt

Reference: https://github.com/Lightprotocol/light-protocol/actions/runs/21326932608/job/61385796522

Please push a fix - at the right place add a sleep for 3 second just before initing the compressible config with airdrop

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