Web UI parse topic expiry from seconds instead of microseconds

[lukaszzborek]

Bug description

In web ui showing expiry with wrong parsing, for example instead of 10 mintutes showing 19 years (expiry is saved as microsecond, previously was as seconds).
Also create/update topic is affected by that

Deployment

None

Versions

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Hardware / environment

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Sample code

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Logs

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Iggy server config

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Reproduction

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