Bugfix: Live running subflow updates

[brandonreid]

• Fixes live running subflows
• Fixes subflow state logic that would have hidden any running state that wasn't of type "RUNNING"
• Cleans up some confusing references to node in nodeFlowRun and nodeFlowRunState and standardizes their use of internalNode so that up-to-date values are used.

Before: https://github.com/PrefectHQ/graphs/assets/6776415/fe6f7625-c80b-464a-a3e1-5d622d94ad08

After: https://github.com/PrefectHQ/graphs/assets/6776415/e78c4283-3354-4e52-b105-daf7b956d8d7

[netlify[bot]]

✅ Deploy Preview for prefect-graphs ready!

Name	Link
🔨 Latest commit	c95dcd6b0a0ac0d240173c5e21b0769a7ee32b49
🔍 Latest deploy log	https://app.netlify.com/sites/prefect-graphs/deploys/65f1df053f44e3000858338f
😎 Deploy Preview	https://deploy-preview-455--prefect-graphs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.