1. Issue

When you modify symbols (add/delete) in .alpackages folder the AL Explorer doesn't update which can lead to confusement since the developer thinks that AL exlorer shows the CURRENT Symbols in the .alpackage folder.

2. To Reproduce

Steps to reproduce the behavior:

1. Delete all symbols in .alpackages
2. Download symbols (AL: Download Symbol) from environment (ex. Prod) that contains dependency symbols ( I did this for an OnPrem installation but it shouldn't matter).
3. Restart Visual Studio code
4. Let it build environment
5. Open AL Explorer, go to a source code for an object that you have changed in the second environment.
6. Delete all symbols in .alpackages
7. Download symbols from second environment (dev) where you have made changes to the object
8. Open AL Explorer and go to the source of the object and it still shows the source for the object in the first environment

3. Expected/wanted behavior

I would expect that AL Explorer reindexes the symbols once there are file changes the .alpackages folder or AT LEAST reindexes the symbols when it runs AL: Download Symbols

4. Actual behavior

AL Explorer caches/indexes the source code when the repo is opened and it doesn't get refreshed when you choose AL Download Symbols OR do updates to the folder.