chore: adjust padding for include time

[richardshiue]

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PR Checklist

• My code adheres to AppFlowy's Conventions
• I've listed at least one issue that this PR fixes in the description above.
• I've added a test(s) to validate changes in this PR, or this PR only contains semantic changes.
• All existing tests are passing.

Summary by Sourcery

Adjust the horizontal padding around the "Include Time" toggle to refine UI spacing.

Enhancements:

• Reduce space between clock icon and text from 6px to 4px.
• Add 2px horizontal space after icon row before the label.