Update VSCode to 1.94.0

Issue:

• This MR was originally created as a spike for: Spike: Integrate VSCode >= 1.94.0's new module ... (gitlab-web-ide#422 - closed)
• Repurposing as this already contains all acceptance criteria in the dev issue: Update VSCode submodule to 1.94.0 (#56 - closed)

Description

This is a spike MR to upgrade VSCode to 1.94.0. Notable changes:

• vscode project has migrated their package manager from yarn to npm.
• There's a change in how loader.js is packaged in gulpfile.vscode.web.js. This requires modifications to our build-and-bundle-web.sh script to refer to vscode-web as the source path to copy the compiled VSCode instead of vscode/out-vscode-web-min.
• Resolving merge conflicts, mostly due to how ESM requires relative imports. See individual notes for more details.

Exploratory testing

Workspaces	Web IDE
workspaces_exploratory_testing_1080p.mov	web_ide_exploratory_testing_1080p.mov
Container image used to test Workspaces

How to validate:

You can use the following MRs to test out the changes within Web IDE and Workspaces:

• Web IDE: Draft: Upgrade Web IDE VSCode version to 1.94.0 (gitlab-web-ide!470 - closed)
• Workspaces: chore: create dev build to test out VSCode 1.94.0 (gitlab-org/workspaces/gitlab-workspaces-tools!38 - closed)