PyG 2.5.3 includes a variety of bug fixes related to the MessagePassing refactoring.

Bug Fixes

• Ensure backward compatibility in MessagePassing via torch.load (#9105)
• Prevent model compilation on custom propagate functions (#9079)
• Flush template file before closing it (#9151)
• Do not set propagate method twice in MessagePassing for decomposed_layers > 1 (#9198)

Full Changelog: 2.5.2...2.5.3