Blazor lifecycle diagram and coverage

[guardrex]

Fixes #16287

Internal Review Topic

[danroth27]

@guardrex I think all of the changes you proposed sound good, except the addition of the SetParametersAsync in the first image during the property injection step. I don't think those are really related.

@SteveSandersonMS Component disposal isn't currently included in these diagrams. Other community diagrams that I've seen include it. Should we as well?

I think it's also import that include some mention of how Blazor evaluates whether a child component should be rendered on subsequent renders. High level, if the parameter values can be guaranteed to be the same then the child component won't be rendered. @SteveSandersonMS Do you agree that these details should be included? If yes, could you please provide the specifics?

[guardrex]

If I'm to perform the updates that I listed (perhaps after you, @SteveSandersonMS, make further updates ☝️), can the PPT be emailed as an attachment to me? I can't access the provided link to that file in our offline discussion.

UPDATE: I have the file. Thanks, Dan!

[guardrex]

@danroth27 ...

• Does it make sense to place the events (Parent renders, DOM event, and Render) outside of the flow diagrams as shown in the images?
• Other changes?

If these images look good or I can make one more set of edits after your feedback, let me know how many (or if all) of the attached reviewers need to sign off before I can proceed with merging. 👂

Latest images are on the PR.