hotfix for multi-lines imports %load_node

[noklam]

Description

Fix #3760 @natashadunstan

Screenshot of %load_node in IPython after fix :

It was agreed in previous discussion this is a hot fix. The generic fix for this is too complicated if we need to start caring about comments. The will work for most case when code are formatted (likely the case if one is using bracket & multi line imports).

Development notes

• Modify the import parsing statement to handle import with brackets

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Checklist

• Read the contributing guidelines
• Signed off each commit with a Developer Certificate of Origin (DCO)
• Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• Updated the documentation to reflect the code changes
• Added a description of this change in the RELEASE.md file
• Added tests to cover my changes
• Checked if this change will affect Kedro-Viz, and if so, communicated that with the Viz team

[merelcht]

LGTM ⭐

[ElenaKhaustova]

LGTM!