Fix AutoAPI issues for edx-platform readthedocs Builds

[irtazaakram]

AutoAPI caused performance issues when building the edx-platform docs on ReadTheDocs, so we had to temporarily disable it.

We need to dig into what’s causing the problem and figure out how we can optimize or adjust the setup to bring AutoAPI back without hitting RTD’s resource limits. This might include reviewing directory structures, excluding unnecessary files, or tweaking the configuration.

References:
#35807
#35846
#35939
https://readthedocs.org/projects/edx-platform-docs/builds/