rascal is loaded from the VS Code extension even if another version is depended on

[sungshik]

Scope (branches)

• Rascal: replace-lib-by-mvn-and-others (Replace lib:/// scheme by mvn:/// and file:/// and jar+file:/// everywhere rascal#1969)
• Rascal LSP: replace-lib-scheme (testing rascal without the lib scheme #454)

Problem

Background

• Which versions of projects are loaded in the REPL? #537

Situation

• Projects p is open in the workspace.
• p has a dependency on rascal (declared in its POM).
• A REPL is created in p.

Expected

Both the Rascal modules and the Java classes of rascal should be loaded from the version in the workspace (if rascal is open) or in the local Maven repository (if rascal isn't open).

Actual

• ⚠️ The Rascal modules of rascal are loaded from the version in the VS Code extension
• ⚠️ The Java classes of rascal are loaded from the version in the VS Code extension