Variant Analysis Results don't show results without source location in some cases

Start by reproducing the query in Quick Query and inspecting the Variant Analysis Results view with results that lack source locations. Compare the behavior with a local database run and with a query whose first tuple value is a string. Done means omitted results are either clearly counted or available through a raw-results view.

Describe the bug
If you use a query with @kind problem in the metadata (or even without @kind, whose select clause has an element as first tuple value, e.g. select element, "my message") and all or some of the elements in the results don't have a source location (for example because they come from an external library), then they are not shown in the Variant Analysis Results view and there is no indication that they were omitted.

This differs from a run for a local database, whose result view includes these results, respectively offers to view the "raw results".

It also differs from a Variant Analysis run without @kind ... in the metadata and where for example a string is the first value in the result tuples (e.g. select "my message", element), which does show the raw results.

Version
Extension version

CodeQL extension version: 1.8.8 
CodeQL CLI version: 2.14.0 
Platform: win32 x64

VS Code version

Version: 1.80.1 (user setup)
Commit: 74f6148eb9ea00507ec113ec51c489d6ffb4b771
Date: 2023-07-12T17:22:07.651Z
Electron: 22.3.14
ElectronBuildId: 21893604
Chromium: 108.0.5359.215
Node.js: 16.17.1
V8: 10.8.168.25-electron.0
OS: Windows_NT x64 10.0.19045

To reproduce

1. Open Quick Query and paste the following query

   /**
    * @kind problem
    */
   
   import java
   
   from EnumType t
   where not t.fromSource()
   select t, "my message"
   

2. Run Variant Analysis, for example on the top 10 repositories
3. Open the Variant Analysis Results
   ❌ Bug: No results are shown, and there is no indication and no way to show the actual results which don't have a source location

Expected behavior
Either:

• There should be at least an indication that X results were omitted because they are not in the source code
• Or better, there should be a way to view the "raw results" (i.e. shown as regular table), which include elements without source location

Additional context
This might affect other @kind types as well.