[RTC-515] Fix `ensure_epmd_started!`

[sgfn]

Acknowledging the stipulations set forth:

• [x] I hereby confirm that a Pull Request involving updates to the Software Development Kit (SDK) has been smoothly merged, currently awaits processing, or is otherwise deemed unnecessary in this context.
• [x] I also affirm that another Pull Request, specifically addressing updates to the documentation body (commonly referred to as 'docs'), has either been successfully incorporated, is in the process of review, or is considered superfluous under the prevailing circumstances.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 86.77%. Comparing base (5a96434) to head (67656b2).

:exclamation: Current head 67656b2 differs from pull request most recent head d935a70. Consider uploading reports for the commit d935a70 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #190 +/- ## ========================================== - Coverage 87.46% 86.77% -0.69% ========================================== Files 74 74 Lines 1500 1505 +5 ========================================== - Hits 1312 1306 -6 - Misses 188 199 +11 ``` | [Files](https://app.codecov.io/gh/jellyfish-dev/jellyfish/pull/190?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jellyfish-dev) | Coverage Δ | | |---|---|---| | [lib/jellyfish/application.ex](https://app.codecov.io/gh/jellyfish-dev/jellyfish/pull/190?src=pr&el=tree&filepath=lib%2Fjellyfish%2Fapplication.ex&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jellyfish-dev#diff-bGliL2plbGx5ZmlzaC9hcHBsaWNhdGlvbi5leA==) | `48.48% <0.00%> (-8.66%)` | :arrow_down: | ... and [3 files with indirect coverage changes](https://app.codecov.io/gh/jellyfish-dev/jellyfish/pull/190/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jellyfish-dev) ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/jellyfish-dev/jellyfish/pull/190?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jellyfish-dev). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jellyfish-dev) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/jellyfish-dev/jellyfish/pull/190?dropdown=coverage&src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jellyfish-dev). Last update [5a96434...d935a70](https://app.codecov.io/gh/jellyfish-dev/jellyfish/pull/190?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jellyfish-dev). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jellyfish-dev).