fix: Allow observations with components(group observations) as components in observation template

[Irfan778899]

fix: Approve/Reject changes for nested observations

[mujeerhashmi]

This feature will help us in designing observation packages.
@Irfan778899 can you kindly update the screen recording of the feature.
@Sajinsr Kindly review

[Irfan778899]

Nested.Observations.mp4

[Sajinsr]

Hi @Irfan778899,

Thanks for the PR. I noticed a few issues in this PR that need to be addressed before we can proceed:

1. There’s no validation to prevent self referencing — for example, a template can currently be added as its own child or within its nested templates, which causes the sample collection creation to fail..
2. There’s no limit set for nested components, which could break the diagnostic report ui.
3. In the sample collection, only node templates are displayed. For example, when selecting a template like Lipid Profile, it currently shows all child components instead of showing Lipid Profile itself. The row already includes a button to view and collect its component observations, so this needs to be corrected.
4. There are some linter issues and test failures that need to be fixed.

Please address these points and update the PR accordingly.

[Irfan778899]

Hi @Sajinsr

As per the above comments,

1. Added validation to prevent self-referencing — a template can no longer be added as its own child or within its nested
   templates.
2. Implemented a limit of three levels of nesting under the parent template.
3. Updated the logic so that only group templates are added to the Sample Collection document when group templates exist,
   instead of adding individual child templates.
4. Linter issues have been resolved.

Please review and let me know if any further changes are needed.