Move manual update to run model

[oyvindeide]

Issue Resolves #1050

• [x] PR title captures the intent of the changes, and is fitting for release notes.
• [x] Added appropriate release note label
• [x] Commit history is consistent and clean, in line with the contribution guidelines.
• [x] Make sure tests pass locally (after every commit!)

When applicable

• [x] When there are user facing changes: Updated documentation
• [ ] New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• [x] Large PR: Prepare changes in small commits for more convenient review
• [ ] Bug fix: Add regression test for the bug
• [ ] Bug fix: Create Backport PR to latest release

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.98795% with 5 lines in your changes missing coverage. Please review.

Project coverage is 90.61%. Comparing base (425d458) to head (b7239c9). Report is 4 commits behind head on main.

Files	Patch %	Lines
src/ert/run_models/manual_update.py	94.28%	2 Missing :warning:
src/ert/run_models/model_factory.py	81.81%	2 Missing :warning:
src/ert/run_models/evaluate_ensemble.py	50.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #8391 +/- ## ========================================== - Coverage 90.86% 90.61% -0.25% ========================================== Files 347 346 -1 Lines 21127 21096 -31 ========================================== - Hits 19197 19117 -80 - Misses 1930 1979 +49 ``` | [Flag](https://app.codecov.io/gh/equinor/ert/pull/8391/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=equinor) | Coverage Δ | | |---|---|---| | [gui-tests](https://app.codecov.io/gh/equinor/ert/pull/8391/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=equinor) | `75.84% <92.16%> (-0.27%)` | :arrow_down: | | [integration-tests](https://app.codecov.io/gh/equinor/ert/pull/8391/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=equinor) | `54.04% <59.03%> (-0.23%)` | :arrow_down: | | [unit-tests](https://app.codecov.io/gh/equinor/ert/pull/8391/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=equinor) | `68.75% <58.43%> (-0.19%)` | :arrow_down: | 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=equinor#carryforward-flags-in-the-pull-request-comment) to find out more.

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