[docs]: DIAGRAM - Implement "Notification and dynamic width" in "Diagram Canvas"

[BioPhoton]

Slide here: https://docs.google.com/presentation/d/1LlVmTEcoc1LRV00Tp-rDp4kopI-NobC9S2w-w5pC_JA/edit#slide=id.g4c256b0d88_0_75