Update API Readme to indicate renderWhenVisible function is optional

[scottbell]

Closes #7284

Describe your changes:

Updated API documentation to indicate renderWhenVisible function is optional

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Is this change backwards compatible? For example, developers won't need to change how they are calling the API or how they've extended core plugins such as Tables or Plots.

Author Checklist

• Changes address original issue?
• Tests included and/or updated with changes?
• Command line build passes?
• Has this been smoke tested?
• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
• Reviewer has tested changes by following the provided instructions?
• Changes appear not to be breaking changes?
• Appropriate automated tests included?
• Code style and in-line documentation are appropriate?
• Has associated issue been labelled unverified? (only applicable if this PR closes the issue)
• Has associated issue been labelled bug? (only applicable if this PR is for a bug fix)

[deploysentinel]

Current Playwright Test Results Summary

✅ 15 Passing

Run may still be in progress, this comment will be updated as current testing workflow or job completes...

(Last updated on 12/13/2023 09:57:38am UTC)

Run Details

Running Workflow e2e-couchdb on Github Actions

Commit: e6aac77

Started: 12/13/2023 09:55:55am UTC

View Detailed Build Results

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Current Playwright Test Results Summary

✅ 164 Passing - ⚠️ 4 Flaky

Run may still be in progress, this comment will be updated as current testing workflow or job completes...

(Last updated on 12/13/2023 09:57:38am UTC)

Run Details

Running Job e2e-stable on CircleCI

Commit: e6aac77

Started: 12/12/2023 10:10:43pm UTC

⚠️ Flakes

📄   functional/planning/ganttChart.e2e.spec.js • 1 Flake

Test Case Results

Test Case	Last 7 days Failures	Last 7 days Flakes
Gantt Chart Replaces a plan with a new plan Retry 1 • Initial Attempt	0% (0) 0 / 49 runs failed over last 7 days	2.04% (1) 1 / 49 run flaked over last 7 days

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📄   functional/planning/timelist.e2e.spec.js • 1 Flake

Test Case Results

Test Case	Last 7 days Failures	Last 7 days Flakes
Time List Create a Time List, add a single Plan to it and verify all the activities are displayed with no milliseconds Retry 1 • Initial Attempt	8.16% (4) 4 / 49 runs failed over last 7 days	69.39% (34) 34 / 49 runs flaked over last 7 days

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📄   functional/plugins/notebook/restrictedNotebook.e2e.spec.js • 1 Flake

Test Case Results

Test Case	Last 7 days Failures	Last 7 days Flakes
Restricted Notebook with a page locked and with an embed @addinit Allows embeds to be deleted if page unlocked @addinit Retry 1 • Initial Attempt	0% (0) 0 / 25 runs failed over last 7 days	60% (15) 15 / 25 runs flaked over last 7 days

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📄   functional/plugins/notebook/notebookSnapshots.e2e.spec.js • 1 Flake

Test Case Results

Test Case	Last 7 days Failures	Last 7 days Flakes
Snapshot image tests Can drop an image onto a notebook and create a new entry Retry 1 • Initial Attempt	0% (0) 0 / 25 runs failed over last 7 days	48% (12) 12 / 25 runs flaked over last 7 days

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View Detailed Build Results

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[codecov]

Codecov Report

Merging #7285 (e6aac77) into master (9ed8d4f) will increase coverage by 0.79%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7285      +/-   ##
==========================================
+ Coverage   55.10%   55.90%   +0.79%     
==========================================
  Files         655      655              
  Lines       26297    26297              
  Branches     2541     2541              
==========================================
+ Hits        14492    14701     +209     
+ Misses      11103    10888     -215     
- Partials      702      708       +6     

Flag	Coverage Δ		*Carryforward flag
e2e-full	41.85% <ø> (-0.06%)	⬇️	Carriedforward from 34cb992
e2e-stable	58.32% <ø> (+3.49%)	⬆️
unit	49.21% <ø> (-0.07%)	⬇️

*This pull request uses carry forward flags. Click here to find out more.

see 53 files with indirect coverage changes

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[akhenry]

LGTM