Fix geometry icons

[aparajit-pratap]

Purpose

Fix geometry icons:
Curve.NormalAtParameter(double, bool)
PolyCurve.Heal
Surface.Repair
Solid.Repair
Surface.ToNurbsSurface(bool)

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated

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[pinzart90]

Oops, I forgot to cleanup those icons
Thanks !