Move to core: Grid influencers

[aubrey-oneal]

https://pages.github.ibm.com/cdai-design/pal/patterns/grid-influencers/usage/

Tasks

Beta Give feedback

1. [Grid influencers] Audit #4237
   role: design ✏️ type: docs 📖 +2

Background:

• Some of content has been already moved to core's grid. Compare and contrast. Find the diff. How much of this page is actually going to move over versus "do we just kill the page". (because of Jeannie's work she did last year).
• Where it references Side Panel, we can take in under Side Panel usage guidance in PAL
• Consider the Tearsheet guidance.
• Kill the Sketch references.

Deliverable

1. Evaluate what Jeannie already moved in our Carbon grid docs.
2. Determine what is still missing (what happens if we kill that guidance on PAL)
3. IA exercise

• Determine if it needs to be its own L1 in the IA
• Determine if it needs to be it's a component or pattern.
• Determine Figma implication depending on what we decide.

4. Figure out cross-linking to PAL (Tearshets, Side Panels, Shells on both sides)

Closes #2673