fix(vscode): Update functions extension bundle to workflows

[ccastrotrejo]

This pull request primarily focuses on refactoring the apps/vs-code-designer codebase to replace the usage of defaultBundleId with extensionBundleId. This change is reflected across multiple files and functions.

• The debugSymbolDll import statement now includes extensionBundleId and the bundleFolder path now uses extensionBundleId instead of the hard-coded string.

• The defaultBundleId import has been removed and replaced by extensionBundleId in all instances. This includes changes in the getBundleFeed, getBundleDependencyFeed, and addDefaultBundle functions.

• The defaultBundleId constant has been removed.