Fix: support shvl on customapi dynamic list target

[matheusvellone]

Proposed change

Support SHVL syntax on dynamic list target templating
There is no way to access nested fields on dynamic lists target field

  target: https://example.com/{subject.id}

Closes # (issue)

Type of change

• New service widget
• Bug fix (non-breaking change which fixes an issue)
• New feature or enhancement (non-breaking change which adds functionality)
• Documentation only
• Other (please explain)

Checklist:

• If applicable, I have added corresponding documentation changes.
• If applicable, I have reviewed the feature / enhancement and / or service widget guidelines.
• I have checked that all code style checks pass using pre-commit hooks and linting checks.
• If applicable, I have tested my code for new features & regressions on both mobile & desktop devices, using the latest version of major browsers.

[shamoon]

Hmm, so I can see the value of this but Im a little concerned this adds complexity (maybe slows things down but lets be honest, probably not) where there doesnt need to be, for example the code as written will fail if target is null. Also this will fail if the property has a '.' in it, a rare but apparently a thing sometimes.

It's obviously not a big change, Im just trying to be careful about constantly changing / breaking things without a good reason (because we've done a fair bit of that lately)

[yamek]

So you are working on how to build a link

[shamoon]

This didn't actually work as-is, so I've fixed it as suggested.

Totally happy for you to contribute here, I would humbly suggest the best PRs are for high-value things that are requested 👍

Thanks

[github-actions]

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