feat: Allow markdown title and description in KeyValueEditor

[panicboat]

Fixes #13934

Motivation

Our organization allows non-developers to submit workflows using Argo Workflows.
However, since non-developers only submit WorkflowTemplate, etc., we need to have them read the Workflow description from the UI.
For this reason, we adopted markdown, which is easier to read.

Modifications

If the KeyValueEditor key is workflows.argoproj.io/title or workflows.argoproj.io/description, it is now expressed in markdown.

ClusterWorkflowTemplate

CronWorkflow

WorkflowTemplate

Verification

On the Metadata tab below, we have verified that the Title and Description are marked down.
Also verified that all other fields have not changed.

• CronWorkflow
• ClusterWorkflowTemplate
• WorkflowTemplate

  labels:
    workflows.argoproj.io/title: Test-Title
    workflows.argoproj.io/description: This-is-a-simple-hello-world-example
  annotations:
    workflows.argoproj.io/title: '**Test Title**'
    workflows.argoproj.io/description: |
      `This is a simple hello world example.`
      You can also run it in Python: https://couler-proj.github.io/couler/examples/#hello-world

I have verified that no other changes have been made to the Input windows of ClusterWorkflowTemplate and WorkflowTemplate.