SwapController - Ensure untrusted data sources are logged correctly

[lb-]

Avoids the rare case of requestUrl being used to log out an object in an unhanded way.

See https://developer.mozilla.org/en-US/docs/Web/API/console#s

Fixes #11212

[squash-labs[bot]]

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Test this branch here: https://lb-fix11212-swap-controller-er-r9q3l.squash.io

[lb-]

@laymonage - any chance for a review on this?

Super small change and a low risk but flagged with our security reporting (see issue).

I could just merge but wanted someone else to just look to check it's OK.

[lb-]

Thanks.