Enable checks for total escrow in E2Es

[chatton]

Summary

In order to run E2Es in parallel, it is required to remove the checks for total escrow, as currently all of the tests are using the same denoms. Regular escrow checks and wallet balance checks are unaffected.

In order to be able to check the total escrow feature, we will need to configure each test to use a separate denom so tests do not interfere with one another.

This may require changes in interchaintest.

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