Fix IllegalArgumentException when updating project configuration with duplicate natures#2183

Copilot wants to merge 3 commits intomastereclipse-platform/eclipse.platform:masterfrom

copilot/fix-f96a7e61-422b-4204-a172-7bdb7413a580eclipse-platform/eclipse.platform:copilot/fix-f96a7e61-422b-4204-a172-7bdb7413a580Copy head branch name to clipboard