Move security patch from main project to `gitlab-web-ide`

MR:

• fix: Run security patch before pack (!401 - merged)
• Upgrade @gitlab/web-ide (gitlab!177628 - merged)

Description

To mitigate https://gitlab.com/gitlab-org/security/gitlab/-/issues/1092, we patched the @gitlab/web-ide package used in the main project to:

• Remove unnecessary .html files
• Replace usage of searchParams...parentOrigin

See this file:

• https://gitlab.com/gitlab-org/gitlab/-/blob/d2961ddfd862a967e7fa395f093b9bb6724776d9/patches/@gitlab+web-ide+0.0.1-dev-20240531032328.patch#L1

We want to remove this patch and handle this modification of the VSCode assets here.

Acceptance Criteria

• Move the web_ide_assets_spec test into this project.
  • Maybe this is an "integration" test since we're not actually testing units... Maybe we should add a sibling to packages/ folder for tests/ which house our tests that require the whole project to be built.
  • We'll need to make sure this test runs on CI.
  • This has been moved to follow-up Move Web IDE assets specs from main project (#431 - closed)
• Update packages/vscode_build to apply the changes that would make the test pass