Enabled label management when creating or editing a workflow

[JBBianchi]

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What this PR does / why we need it:
Adds the ability to add/remove labels from a workflow.

Special notes for reviewers:

Additional information (if needed):

[Copilot]

Pull Request Overview

This PR enables label and annotation management when creating or editing workflows in the Synapse Dashboard. It replaces the simplified operator selection with comprehensive label/annotation management through a new dictionary editor component.

• Introduces a DictionaryEditor component for managing key-value pairs (labels and annotations)
• Refactors workflow creation and instance creation to use labels/annotations instead of operator strings
• Updates UI layout with improved CSS classes and styling for better organization

Reviewed Changes

Copilot reviewed 10 out of 13 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/dashboard/Synapse.Dashboard/wwwroot/css/table.scss	Adds utility CSS for table column width fitting
src/dashboard/Synapse.Dashboard/wwwroot/css/app.scss	Adds flex utilities and updates problem display styling
src/dashboard/Synapse.Dashboard/Pages/Workflows/Details/View.razor	Updates workflow instance creation calls to pass labels/annotations
src/dashboard/Synapse.Dashboard/Pages/Workflows/Details/Store.cs	Refactors instance creation to use labels/annotations instead of operator string
src/dashboard/Synapse.Dashboard/Pages/Workflows/Create/View.razor	Integrates dictionary editor for labels/annotations in workflow creation
src/dashboard/Synapse.Dashboard/Pages/Workflows/Create/Store.cs	Adds label/annotation management methods and updates save logic
src/dashboard/Synapse.Dashboard/Pages/Workflows/Create/State.cs	Adds Labels and Annotations properties, removes Operator property
src/dashboard/Synapse.Dashboard/Components/DictionaryEditor/DictionaryEditor.razor	New reusable component for editing key-value dictionaries
src/dashboard/Synapse.Dashboard/Components/CreateWorkflowInstanceDialog/CreateWorkflowInstanceParameters.cs	Replaces Operator property with Labels and Annotations
src/dashboard/Synapse.Dashboard/Components/CreateWorkflowInstanceDialog/CreateWorkflowInstanceDialog.razor	Integrates dictionary editor for instance creation dialog

Comments suppressed due to low confidence (2)

src/dashboard/Synapse.Dashboard/Components/DictionaryEditor/DictionaryEditor.razor:64

• The method name 'AddLabel' is misleading since this component is a generic dictionary editor that can handle both labels and annotations. Consider renaming to 'AddEntry' to match the component's generic purpose.

    private void AddLabel()

src/dashboard/Synapse.Dashboard/Components/DictionaryEditor/DictionaryEditor.razor:76

• The method name 'RemoveLabel' is misleading since this component is a generic dictionary editor that can handle both labels and annotations. Consider renaming to 'RemoveEntry' to match the component's generic purpose.

    private void RemoveLabel(string key)