[BUG] Symbols sometimes not showing for newly detected files

[SpontanCombust]

Describe the bug
Document outline, i.e. symbols in the editor sometimes do not show up when opening the document even after the whole workspace has been processed. You need to manually edit the file to trigger a refresh. After that symbols finally appear.

To Reproduce
Steps to reproduce the behavior:

1. Open a project that depends on content0, so it takes some time to process the entire workspace
2. Open some script file (preferably a big one)
3. Try reloading the folder with this file opened multiple times
4. Observe the "Outline" view in "Explorer" to see if symbols get loaded
5. Sometimes this view will stay empty indefinitely until the file gets edited

Expected behavior
Outline should always get filled if the document contains any symbols without any user input

Screenshots
If applicable, add screenshots to help explain your problem.

Environment

• OS: Windows
• Editor: Visual Studio Code 1.91.1
• Version: v0.4.0