fix(platform): make platform table loading input public

[mikerodonnell89]

fixes #11800 for ng15

[netlify[bot]]

❌ Check the deploy log for errors here: https://app.netlify.com/sites/fundamental-ngx/deploys

Name	Link
🔨 Latest commit	667e6753a765409b292869d02706aac171694905
🔍 Latest deploy log	https://app.netlify.com/sites/fundamental-ngx/deploys/662c25849b36240008facbde

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 667e675):

https://fundamental-ngx-gh--pr11825-fix-11800-ng15-rsaj6lbg.web.app

_{(expires Mon, 29 Apr 2024 22:15:30 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: 41b993ee8e451bd7c6770b342ce142dc886eacff}

[droshev]

@mikerodonnell89 we were not asked to downport it.