Added "Select an option" as default none selector on Workflow Visualizer

[AndrewHamal]

What does this PR do?

Shows "Select an option" as a default selector on the select component for the trigger step in the workflow visualizer

Fixes #7432

[greptile-apps]

PR Summary

This PR adds a default 'Select an option' value to the select components in the Workflow Visualizer's trigger step.

• Added SELECT_AN_OPTION constant in WorkflowEditTriggerForm.tsx
• Updated options prop for both Select components to include the default option
• Modified onChange handlers to handle empty option selection
• Improved UX by providing a clear initial state for select fields
• Ensures compatibility with existing workflow logic by handling undefined values

_{1 file(s) reviewed, 2 comment(s)
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[lucasbordeau]

@Bonapara I think we want something like No value in our select field type ?

[Bonapara]

It doesn't really make sense to have a trigger without an object, but we can use No value indeed.

[AndrewHamal]

@Bonapara you mean with out anything remove "Select an option" and have empty nothing selected at first?

[Bonapara]

After further thought, I think it's okay to have the empty state only when no object has been selected "Select an Option", and to only have the ability to switch between objects without the option to reset to null/select an Option when one gets selected.

[Devessier]

Hello @AndrewHamal, I pushed an update to your code to use pre-existing solutions I didn't know about when I created the issue. You will get the OSS points. Thanks for your contribution.

[Devessier]

We can merge.

[oss-gg]

Awarding AndrewHamal: 150 points 🕹️ Well done! Check out your new contribution on oss.gg/AndrewHamal