fix: ensure assistant message content is never undefined for Gemini compatibility#10559

mrubens merged 1 commit intomainRooCodeInc/Roo-Code:mainfrom

feature/roo-425-openrouter-gemini-parts-field-validation-errorRooCodeInc/Roo-Code:feature/roo-425-openrouter-gemini-parts-field-validation-errorCopy head branch name to clipboard