Doc Update Tracker - Refresh articles for Heft in SPFx v1.22

This is a master tracker of all articles on the SharePoint dev docs that reference gulp & need to be updated for the new Heft-based toolchain.

Help Wanted:

If you want to help out, please follow the guidelines below:

1. Leave a comment that you want to work on a specific document (reference the file in your comment). We'll create an issue and assign it to you so others aren't working on the same article.
2. When updating the content, ensure you follow the Contribution Guidelines
3. When you submit your PR...
   1. Reference the issue associated with the article using the - closes #issuenumber in the PR template
   2. When you submit your PR, make sure to revisit and address any findings listed by the automated build check process (this takes a few minutes to complete). All issues (including suggestions & warnings) must be addressed before we can merge the issue.
   3. Monitor your notifications for change requests from our content review. Content reviews for open PR's happen on a weekly basis.

Articles to Update

WebParts ▶ Getting Started

🚨 articles in this group should be updated in a single PR

• #10544
• connect-to-sharepoint.md - in #10544
• serve-your-web-part-in-a-sharepoint-page.md - in #10544
• hosting-webpart-from-office-365-cdn.md - in #10544

WebParts ▶ Getting Started ▶ Web part properties & property pane

🚨 articles in this group should be updated in a single PR

• validate-web-part-property-values.md - in #10544
• build-custom-property-pane-controls.md - in #10544
• use-cascading-dropdowns-in-web-part-properties.md - in #10544

WebParts ▶ Concepts & scenarios

• simplify-adding-web-parts-with-preconfigured-entries.md - in #10544
• use-fabric-react-components.md - in #10549
• integrate-with-teams-introduction.md - in #10549
• use-sp-pnp-js-with-spfx-web-parts.md - in #10549

WebParts ▶ Tutorials

• #10552
• #10553
• #10554
• #10555
• #10556

Extensions

• #10566
• #10567
• #10568

Extensions ▶ Getting started

🚨 articles in this group should be updated in a single PR

• #10573
• #10574
• #10575
• #10576

Library components

• #10580

• Migrate pre-SPFx & classic mode customizations

  • #10581
  • #10582
  • #10583
  • #10584
  • #10585
  • #10586
  • #10587
  • #10588

• Guidance

  • #10589

• External libraries

  • #10590
  • #10591

• Connect to APIs ▶ Tutorials

  • #10591
  • #10593
  • #10594

Setup & deployment

• #10676
• #10670
• #10674
• Concepts & scenarios
  • #10669
  • #10665
  • integrate-with-teams-introduction.md

Design

• using-custom-dialogs-with-spfx.md
• use-brand-center-fonts-in-spfx-components.md

Build toolchain & dependencies

• #10547

Debugging

• #10678
• #10679

Microsoft Teams

• build-for-teams-meeting-app.md

Microsoft Viva Connections

• build-first-sharepoint-adaptive-card-extension.md
• #10646
• advanced-quick-view-functionality.md
• #10653
• #10658
• media-upload/MediaUploadTutorial.md
• #10660
• #10661
• #10662
• #10663

SharePoint Add-ins modernization

• #10557
• #10558
• #10559