e2e: add liquidity failed

[gartnera]

Random add liquidity failures in CI

https://github.com/zeta-chain/node/actions/runs/11840815330/job/32995675524

Error Trace:	/go/delivery/zeta-node/e2e/runner/liquidity.go:40
	            				/go/delivery/zeta-node/e2e/e2etests/test_operation_add_liquidity_eth.go:24
	Error:      	Not equal: 
	            	expected: 0x1
	            	actual  : 0x0
	Messages:   	add liquidity failed

https://github.com/zeta-chain/node/actions/runs/11846669335/job/33014873211

Error Trace:	/go/delivery/zeta-node/e2e/e2etests/test_erc20_deposit_refund.go:68
	Error:      	Received unexpected error:
	            	add liquidity failed

[lumtis]

One possible reason is test_crosschain_swap initialize liquidity with values or prices so small that the subsequent liquidity adding fail.

Reason that it would happen specifically in light upgrade test is that for those we run test_crosschain_swap first, then the new add liquidity function in the V2 test for the after upgrade testing

[EDIT] well not really as it create a pool ERC20/BTC unlike the other tests