🐛 Bug Report: Links in mardown description content do not open in new tab

[erik-adsk]

📜 Description

When links are included in a template yaml definition these are not opened in a new tab. There is precedence for this being the intent of the application in github issue #9146. The related PR #9148 provided a linkTarget property that can be passed in.

👍 Expected behavior

A github flavored markdown link provided in the description of a scaffolder field should open in a new tab.

👎 Actual Behavior with Screenshots

The link is actually opened in the current tab.

👟 Reproduction steps

1. Create a local-template file local-template.yaml in the plugins/scaffolder-backend/sample-templates folder e.g.

   
   apiVersion: scaffolder.backstage.io/v1beta3
   kind: Template
   metadata:
   name: test-form
   title: Test Form
   description: This is a test form
   spec:
   owner: guest@example.com
   type: test
   parameters:
   - title: Provide some simple information
     properties:
       prop:
         title: A property with links
         type: string
         description: 'A github flavored markdown formatted [link](https://www.google.com) in the description'
   steps:
   - id: debug
     name: debug
     action: debug:log
     input:
       message: message
   output:
   links:
   - title: Google
     url: https://www.google.com/

2. Add `    - ./local-template.yaml` to as defined in [plugins/scaffolder-backend/sample-templates/all-templates.yaml](https://github.com/backstage/backstage/blob/master/plugins/scaffolder-backend/sample-templates/all-templates.yaml)
3. Run the application locally
4. Route or navigate to http://localhost:3000/create
5. Choose the created form e.g. http://localhost:3000/create/templates/default/test-form
6. Select the github formatted link
7. Observe the link is opened in the current tab

### 📃 Provide the context for the Bug.

When a user clicks a link in the markdown of the description of a template field the link is opened in the current tab.  This causes users to lose progress on current template submissions which is especially frustrating for multi-step templates.

### 🖥️ Your Environment

OS:   Windows_NT 10.0.19045 - win32/x64
node: v18.20.0
yarn: 3.8.1
cli:  0.26.5-next.1 (local)
backstage:  N/A

### 👀 Have you spent some time to check if this bug has been raised before?

- [X] I checked and didn't find similar issue

### 🏢 Have you read the Code of Conduct?

- [X] I have read the [Code of Conduct](https://github.com/backstage/backstage/blob/master/CODE_OF_CONDUCT.md)

### Are you willing to submit PR?

Yes I am willing to submit a PR!