Ensure readability of plan printer and add test

[shangm2]

Description

1. Make sure the printout from plan printer is easy to read
2. Add test

Motivation and Context

1. Make sure the printout from plan printer is easy to read

Impact

Test Plan

1. passed the verifier test https://our.internmc.facebook.com/intern/presto/verifier/results/?test_id=213849

Contributor checklist

• Please make sure your submission complies with our contributing guide, in particular code style and commit standards.
• PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• If release notes are required, they follow the release notes guidelines.
• Adequate tests were added if applicable.
• CI passed.

Release Notes

== NO RELEASE NOTE ==