[Fix] Can't deselect nodes in multiModifier mode

[SerhiiTsybulskyi]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: #283

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

Screen.Recording.2025-05-30.at.10.48.14.mov

[netlify]

✅ Deploy Preview for reagraph ready!

Name	Link
🔨 Latest commit	6342259
🔍 Latest deploy log	https://app.netlify.com/projects/reagraph/deploys/6839a02f713bb90008f4a40f
😎 Deploy Preview	https://deploy-preview-329--reagraph.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[amcdnl]

add some comments to the new method otherwise lgtm