efficient writes and update tests

[patkivikram]

Description

This PR removes unnecessary writes to the workflow instance thereby reducing callbacks

Type of Change

• [x] Bug Fix
• [ ] New Feature
• [ ] Breaking Change
• [ ] Refactor
• [ ] Documentation
• [ ] Other (please describe)

Checklist

• [x] I have read the contributing guidelines
• [x] Existing issues have been referenced (where applicable)
• [x] I have verified this change is not present in other open pull requests
• [x] Functionality is documented
• [x] All code style checks pass
• [ ] New code contribution is covered by automated tests
• [x] All new and existing tests pass

[codecov[bot]]

Codecov Report

Merging #48 (869e2e7) into main (275530d) will decrease coverage by 0.04%. The diff coverage is 50.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #48 +/- ## ========================================== - Coverage 86.55% 86.51% -0.04% ========================================== Files 12 12 Lines 1829 1824 -5 Branches 214 215 +1 ========================================== - Hits 1583 1578 -5 - Misses 145 146 +1 + Partials 101 100 -1 ``` | [Files Changed](https://app.codecov.io/gh/wayfair-incubator/dagger/pull/48?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=wayfair-incubator) | Coverage Δ | | |---|---|---| | [dagger/modeler/definition.py](https://app.codecov.io/gh/wayfair-incubator/dagger/pull/48?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=wayfair-incubator#diff-ZGFnZ2VyL21vZGVsZXIvZGVmaW5pdGlvbi5weQ==) | `85.65% <0.00%> (-0.78%)` | :arrow_down: | | [dagger/store/stores.py](https://app.codecov.io/gh/wayfair-incubator/dagger/pull/48?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=wayfair-incubator#diff-ZGFnZ2VyL3N0b3JlL3N0b3Jlcy5weQ==) | `90.25% <ø> (ø)` | | | [dagger/templates/template.py](https://app.codecov.io/gh/wayfair-incubator/dagger/pull/48?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=wayfair-incubator#diff-ZGFnZ2VyL3RlbXBsYXRlcy90ZW1wbGF0ZS5weQ==) | `97.65% <ø> (ø)` | | | [dagger/service/services.py](https://app.codecov.io/gh/wayfair-incubator/dagger/pull/48?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=wayfair-incubator#diff-ZGFnZ2VyL3NlcnZpY2Uvc2VydmljZXMucHk=) | `84.55% <100.00%> (ø)` | | | [dagger/tasks/task.py](https://app.codecov.io/gh/wayfair-incubator/dagger/pull/48?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=wayfair-incubator#diff-ZGFnZ2VyL3Rhc2tzL3Rhc2sucHk=) | `79.37% <100.00%> (+0.11%)` | :arrow_up: |