### Search before asking - [X] I had searched in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and found no similar issues. ### What happened 1. The description should has the default value. 2. Pager is missing page selector. <img width="1324" alt="image" src="https://user-images.githubusercontent.com/97265214/165912017-0fe9f761-958a-499e-ad7d-a16de0441c9c.png"> ### What you expected to happen 1. Set the description default value to "-" 2. Add the page selector. ### How to reproduce 1. Open the datasource page. ### Anything else _No response_ ### Version dev ### Are you willing to submit PR? - [X] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
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What happened
What you expected to happen
How to reproduce
Anything else
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Version
dev
Are you willing to submit PR?
Code of Conduct