get_idle_shares use passed in pool_state

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 80.74%. Comparing base (c4e145a) to head (a36c325).

Files	Patch %	Lines
...gent0/ethpy/hyperdrive/interface/read_interface.py	25.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1447 +/- ## ========================================== + Coverage 80.65% 80.74% +0.09% ========================================== Files 104 104 Lines 6451 6450 -1 ========================================== + Hits 5203 5208 +5 + Misses 1248 1242 -6 ``` | [Flag](https://app.codecov.io/gh/delvtech/agent0/pull/1447/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/delvtech/agent0/pull/1447/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech) | `80.74% <25.00%> (+0.09%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=delvtech#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.