Webserver irresponsible when overloaded

## Issue
If the system get overloaded, webserver stop responding and users get blank screen.

## Symptoms
After test conducted on Jul 2 with 62 computing unit each 2 cores and 8 GB memory, two people were not able to do anything in the website. They were constantly getting blank screen.

## Possible reasons
- Same as [Postgres overloading](https://github.com/Texera/texera/issues/3525)
- Server mechanism to avoid shutdown


No file, test, or entry point is named. Start by reproducing the overload symptoms described here and comparing them with the linked Postgres overloading issue (#3525); done means the webserver remains responsive instead of showing blank screens when the system is overloaded.

Written by the indexing model from the issue text.