fix: timeLineBuilder not returning 0:00 in Day and Week views

[KylinShinlyLin]

Description

Fix the issue where timeLineBuilder does not return 0:00 in Day view and Week view

Checklist

• The title of my PR starts with a [Conventional Commit] prefix (fix:, feat:, docs: etc).
• I have followed the [Contributor Guide] when preparing my PR.
• [] I have updated/added tests for ALL new/updated/fixed functionality.
• I have updated/added relevant documentation in docs and added dartdoc comments with ///.
• I have updated/added relevant examples in examples or docs.

Breaking Change?

• Yes, this PR is a breaking change.
• No, this PR is not a breaking change.

Related Issues

Fixes an issue where timeLineBuilder does not return 0:00 time slot in Day view and Week view.