WebGL build has high Memory Allocations when using Asset Bundle Cache and CCD

Reproduction steps:
1. Open the uploaded project
2. Turn on Task Manager
3. Build and Run the project
4. Observe "Memory" in the Task Manager

Expected result: Memory usage stays stable
Actual result: Memory usage has a big spike

Reproducible with: 1.16.19 (2020.3.2f1, 2020.3.30f1)

Notes:

• reproduces on Google Chrome, Microsoft Edge, Vivaldi
• Firefox is affected only by bigger projects