Fix timeout in Node and Network methods

While several methods in `Node` and `Network` have a timeout, it is not implemented correctly. This has to be fixed. If we run into a timeout, a `org.hiero.otter.fixtures.util.TimeoutException` should be thrown. Eventually, this has to be added to the Javadocs.

This most likely applies to the container environment only, as Turtle functionality is instant.

Start by locating the Node and Network methods that accept or use timeouts, then inspect how the container environment currently handles an expired timeout. Verify the behavior against org.hiero.otter.fixtures.util.TimeoutException; done means affected container methods throw that exception when their timeout expires. Javadocs are noted as future work.

Written by the indexing model from the issue text.