chore: reify, use opt chaining where relevant (#1427)

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CDX-764

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## Proposed changes

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## Testing

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Author: louis-bompart

packages/cli-e2e/setup/utils/verdaccio.ts

@@ -23,6 +23,7 @@ const verdaccioedPackages = [
   '@coveo/cli-commons-dev',
   '@coveo/cli-commons',
   '@coveo/cli',
+  '@coveo/cli-plugin-source',
 ];
 
 export async function publishPackages() {

packages/cli-e2e/verdaccio/config.yaml

@@ -22,7 +22,7 @@ uplinks:
 packages:
   # All templates packages and the search-token-server are published and fetched from Verdaccio
   # No uplink is allowed, so if it ain't published on Verdaccio, it'll fail.
-  '@coveo/@(angular|create-headless-vue|cra-template|search-token-server|create-atomic|search-token-lambda|cli-commons-dev|cli-commons|cli|atomic-component-health-check)':
+  '@coveo/@(angular|create-headless-vue|cra-template|search-token-server|create-atomic|search-token-lambda|cli-commons-dev|cli-plugin-source|cli-commons|cli|atomic-component-health-check)':
     access: $all
     publish: $all
     unpublish: $all

utils/release/reify.mjs

@@ -41,7 +41,8 @@ function buildDependencyGraph(rootNode) {
         : node.edgesOut;
     const workspaces = edgesOut.filter(
       (edge) =>
-        edge.to.package.name && rootNode.workspaces?.has(edge.to.package.name)
+        edge?.to?.package?.name &&
+        rootNode.workspaces?.has(edge.to.package.name)
     );
     return workspaces.map((edge) =>
       edge.to instanceof Arborist.Link ? edge.to.target : edge.to