feat: optimize code block behavior

[Saul-Mirone]

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Summary

Optimize behavior of code block

How did you test this change?

CI and manually

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Name	Status	Preview	Comments	Updated (UTC)
milkdown-storybook	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 20, 2024 3:19am

[nx-cloud[bot]]

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[cypress[bot]]

Passing run #911 ↗︎

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Merge 62d77972773982d265d872de0ed930f7fd9a0e34 into 415cebb4c4aee5f55cc3b9048cf1...
Project: Default Project	Commit: efc6778d1c ℹ️
Status: Passed	Duration: 01:47 💡
Started: Jun 20, 2024 3:22 AM	Ended: Jun 20, 2024 3:24 AM

Review all test suite changes for PR #1388 ↗︎

[cypress[bot]]

Passing run #912 ↗︎

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Details:

feat: optimize code block behavior (#1388)
Project: Default Project	Commit: f05697f6cf
Status: Passed	Duration: 01:42 💡
Started: Jun 20, 2024 3:36 AM	Ended: Jun 20, 2024 3:38 AM

Review all test suite changes for PR #1388 ↗︎