feat: Update entrypoint.sh to change block time from 1s to 2s (#1484)

Due to clashing timestamps mentioned in
rollkit/rollkit#1529

Signed-off-by: Josh Stein <46639943+jcstein@users.noreply.github.com>

e2e/testapp/entrypoint.sh

@@ -120,4 +120,4 @@ DA_BLOCK_HEIGHT=$(curl http://0.0.0.0:26657/block | jq -r '.result.block.header.
 echo $DA_BLOCK_HEIGHT
 
 # Start the node (remove the --pruning=nothing flag if historical queries are not needed)
-./build/bin/polard start --pruning=nothing "$TRACE" --log_level $LOGLEVEL --api.enabled-unsafe-cors --api.enable --api.swagger --minimum-gas-prices=0.0001abera --home "$HOMEDIR" --rollkit.aggregator true --rollkit.da_start_height $DA_BLOCK_HEIGHT
+./build/bin/polard start --pruning=nothing "$TRACE" --log_level $LOGLEVEL --api.enabled-unsafe-cors --api.enable --api.swagger --minimum-gas-prices=0.0001abera --home "$HOMEDIR" --rollkit.aggregator true --rollkit.da_start_height $DA_BLOCK_HEIGHT --rollkit.da_block_time 2s