[e2e/load] `consolidateFunds` fails due to insufficient funds

[RodrigoVillar]

Currently, there is a flake when running the gradual load workload test in the e2e tests: https://github.com/ava-labs/hypersdk/actions/runs/14382901714/job/40330980490?pr=2004#step:4:1595

We get the current network unit prices here:

hypersdk/tests/e2e/e2e.go

Line 548 in 3db59d2

unitPrices, err := cli.UnitPrices(ctx, false)

which we use to compute the fee that each transfer back to the original funder will use:

hypersdk/tests/e2e/e2e.go

Line 565 in 3db59d2

fee, err := fees.MulSum(units, unitPrices)

The amount we send to the original funder is determined as follows:

hypersdk/tests/e2e/e2e.go

Lines 584 to 585 in 3db59d2

	amount := balance - fee
	action := createTransfer(to.Address(), amount, nonce)

However, it seems that the unitPrices that we queried are lower than the actual network fees due to the fact that we're getting an insufficient balance error.