fix: make REPL errors non-silent

[igorlfs]

Closes #2283

Note: I also wanna make some other errors explicit, if that's okay

Edit: notably, I'm interested in the following line:

vscode-js-debug/src/adapter/threads.ts

Line 616 in 4330850

throw new ProtocolError(errors.createSilentError(text));

[connor4312]

This is intentional, since clients get that error in response to a REPL request and generally will already show that error as the result of the evaluation in their REPL/debug console. This differs from errors in other more implicit requests that have semantics that would not always require the client to show some output/error