feat(playground): optimize input box style and component layout, add …

[youngbeom-shin]

What this PR does: optimize input box style and component layout, add max height limit Remove unnecessary load state bindings, optimize component layout and input box styles

Which issue(s) this PR fixes:

Fixes #

Type of changes Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update

Feature/Issue validation/testing:

Please describe the tests that you ran to verify your changes and relevant result summary.

• [ ] Test A

• [ ] Test B

• Logs

Special notes for your reviewer:

Checklist:

• [ ] I have added unit/e2e tests that prove your fix is effective or that this feature works.
• [ ] I have commented my code, particularly in hard-to-understand areas.
• [ ] I have made corresponding changes to the documentation.
• [ ] I have reviewed my own code and ensured that it follows the project's style guidelines.

Release note: