Durable timer more than 6 days in the future can not be created

**Describe the bug**
When I create a durable timer in an orchestrator function with a date larger than `now + 6 days`, the timer is not started. There is no error. Apparently there used to be a limitation in this SDK which did not allow timers 7 days in the future.

**To Reproduce**

See [repro](https://github.com/sladkoff/durable-timer-repro) for more detailed information and manual reproduction steps.

**Expected behavior**
A timer is started and added to the orchestration history.

**Actual behavior**
A timer is not started and not added to the orchestration history.

**Additional context**

Related [issue](https://github.com/MicrosoftDocs/azure-docs/issues/95643).

Start with the linked durable-timer-repro and reproduce the difference between timers six and seven days in the future. Trace the durable timer scheduling entry point and orchestration history behavior; done means a timer beyond six days starts and appears in the orchestration history without an error.

Written by the indexing model from the issue text.