fix(DevTools): show empty props object when none are present

[everettbu]

Mirror of facebook/react#33651
Original author: ShashankVashishtha18

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When a component has no props, DevTools previously showed undefined. This patch ensures it renders an empty props: {} object instead, for consistency and clarity in the UI.

[greptile-apps]

Greptile Overview

Greptile Summary

Fixed DevTools to display an empty props: {} object instead of hiding the props section when a component has no props.

• Replaced early-return null check with nullish coalescing fallback in InspectedElementPropsTree.js
• Changed behavior from hiding entire props section to showing header with empty state
• Version bumped to 19.2.0-canary for React mirror repository sync

Confidence Score: 5/5

• This PR is safe to merge with no risk
• The change is minimal, well-scoped, and improves UI consistency. The nullish coalescing operator correctly handles both null and undefined cases, and the existing isEmpty logic properly handles the empty object case. The version bump is standard for this mirror repository.
• No files require special attention

Important Files Changed

File Analysis

Filename	Score	Overview
packages/react-devtools-shared/src/devtools/views/Components/InspectedElementPropsTree.js	5/5	Replaced null-check early return with fallback to empty object, ensuring props header always displays
packages/shared/ReactVersion.js	5/5	Version bumped to 19.2.0-canary with commit reference for React mirror sync

[greptile-apps]

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[github-actions]

Closing this pull request after a prolonged period of inactivity. If this issue is still present in the latest release, please ask for this pull request to be reopened. Thank you!