[Performance - WM Website] Elements resizing while the website is loading

[RabebOthmani]

Playing around with network congestion and hard reloads shows how some elements are resizing while the website is loading.

Example:
Main page hero text resizing and flickering while page is loading
Setup: slow 4G, hard reload with refreshDesktop view. Resolution around 1200 x 900

The culprit might be an unsized image element that is in the lower part of the page, from the audience section.
That might resize and it cascades resized in the whole page? Not sure

[JoblersTune]

This is my best attempt to reproduce the issue since the image here is a broken link.

Screencast.from.2025-09-11.11-56-01.mp4

[JoblersTune]

Addressed in commit 5fcfff5