fix: Change UI element layout in the pipeline creation dialog box

Created by: mangoGoForward

Signed-off-by: mango xu.weiKyrie@foxmail.com

What type of PR is this?

/kind design /area devops

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #2546 (closed)

Special notes for reviewers:

Does this PR introduced a user-facing change?

None