Populate diagnostics for `box` modules statically

System details:

Positron and OS details:

Positron Version: 2024.08.0 (Universal) build 48
Code - OSS Version: 1.91.0
Commit: ed616b36655fb24d116108bdd833f1321704315b
Date: 2024-08-19T04:26:51.868Z (1 wk ago)
Electron: 29.4.0
Chromium: 122.0.6261.156
Node.js: 20.9.0
V8: 12.2.281.27-electron.0
OS: Darwin arm64 23.4.0

Interpreter details:

> sessionInfo()
R version 4.4.1 (2024-06-14)
Platform: aarch64-apple-darwin23.4.0
Running under: macOS Sonoma 14.4.1

Matrix products: default
BLAS:   /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib 
LAPACK: /opt/homebrew/Cellar/r/4.4.1/lib/R/lib/libRlapack.dylib;  LAPACK version 3.12.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: America/Chicago
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
[1] compiler_4.4.1 tools_4.4.1    fs_1.6.4       renv_1.0.7   

Describe the issue:

Intellisense and syntax highlighting is broken when using box modules.

Steps to reproduce the issue:

1. Create positron project.
2. Create R file

box::use(R6)

TestClass <- R6$R6Class(
    "TestClass",
    public = list(
        initialize = function() print("Hello world!")
    )
)

TestClass2 <- R6::R6Class(
    "TestClass2",
    public = list(
        initialize = function() print("Hello world 2!")
    )
)

3. Intellisense and syntax highlighting does not work.

Expected or desired behavior:

The tooltips and highlighting should function the same as if I used R6:: or a box module.

Were there any error messages in the UI, Output panel, or Developer Tools console?

NA

Start by reproducing the issue with the R file and box::use(R6) example from the report, then trace the existing R diagnostics, IntelliSense, and syntax-highlighting handling. Done means tooltips and highlighting work for box modules in the same way they do for R6:: and regular box module usage.