[pull] dev from plotly:dev

[pull]

See Commits and Changes for more details.

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Created by pull[bot] (v2.0.0-alpha.1)

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Summary by Sourcery

Fix the unresponsiveness of the Graph component when an invalid figure is passed and add a test to ensure correct behavior when toggling figures.

Bug Fixes:

• Fix the Graph component becoming unresponsive when an invalid figure is passed.

Tests:

• Add a test to verify the Graph component's behavior when toggling between valid and invalid figures.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR implements a fix for the Graph component's handling of invalid figures and adds corresponding test coverage. The main change involves adding null-safe property access in the Graph component and a new test case that verifies the component's behavior when toggling between valid and invalid figures.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added null-safety checks in the Graph component's figure handling	Added optional chaining for figure.data, figure.layout, and figure.frames properties Ensures the component remains responsive when figure is null or invalid	components/dash-core-components/src/fragments/Graph.react.js
Added integration test for Graph component with invalid figures	Created test case that toggles between valid and empty figures Verifies graph title presence/absence based on figure validity Ensures no console errors are generated during figure transitions	components/dash-core-components/tests/integration/graph/test_graph_basics.py
Updated changelog to document the Graph component fix	Added entry for PR Bugfix: Graph component becomes unresponsive if an invalid figure is passed plotly/dash#3103 describing the fix for unresponsive Graph component	CHANGELOG.md

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