H-4322: Allow fullscreening image entities; graph viz/slide fixes

[CiaranMn]

🌟 What is the purpose of this PR?

• Add a 'full screen' button when looking at an image file entity, to allow fullscreening the image
• Graph viz bug fixes
  • Handle edge scaling being set to geometric when all edges are the same weight
  • Make edge sizing max work
• Move some comments that weren't quite in the right place and were thus confusing

Pre-Merge Checklist 🚀

🚢 Has this modified a publishable library?

This PR:

• does not modify any publishable blocks or libraries, or modifications do not need publishing

📜 Does this require a change to the docs?

The changes in this PR:

• are internal and do not require a docs change

🕸️ Does this require a change to the Turbo Graph?

The changes in this PR:

• do not affect the execution graph

[hashdotai]

This PR introduces the ability to fullscreen image entities and includes several graph visualization fixes. The changes are generally well-implemented with a few areas that could be improved.

The fullscreen functionality looks solid, though there are some minor accessibility considerations with the button implementation. The fixes for graph visualization, particularly the edge scaling when all edges have the same weight and making edge sizing max work, are well-thought-out. I like that you've added checks for the edge case where edgeSignificanceRatio === 1, which would cause mathematical issues with the logarithm.

The code comment relocations make sense and help clarify the purpose of certain blocks of code. The fallback behavior in draw-chip-with-icon.ts silently handles image loading failures, which works but could benefit from a warning message to aid debugging.

Overall, this PR implements the required functionality well while fixing the issues described in the ticket, but some small improvements could be made to the code quality and maintainability. None of these issues are critical enough to block merging.

[vilkinsons]

@CiaranMn Some AI reviewer comments to take a look at, but nothing from my side here. Thanks for sorting.