chore(individual-pkg-gen): set the alpha version in alpha module's pa…

…ckage.json files if present (#16965)

This change was already approved and merged in: #16322. It somehow got removed from the `v2-main` branch since originally being merged. This PR is just a cherry-pick of the original commit. 

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This change sets the `version` key in each alpha module's `package.json` file to the alphaVersion that was created in this PR: #16043

And, also sets the version of each dependency on another alpha module to the same version.

Depends on: #16321

Part of: #15591

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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

tools/@aws-cdk/individual-pkg-gen/transform-packages.ts

@@ -3,6 +3,8 @@ import * as awsCdkMigration from 'aws-cdk-migration';
 import * as fs from 'fs-extra';
 // eslint-disable-next-line @typescript-eslint/no-require-imports
 const lerna_project = require('@lerna/project');
+// eslint-disable-next-line @typescript-eslint/no-require-imports
+const ver = require('../../../scripts/resolve-version');
 
 /**
  * @aws-cdk/ scoped packages that may be present in devDependencies and need to
@@ -128,6 +130,9 @@ function transformPackageJson(pkg: any, source: string, destination: string, alp
   const pkgUnscopedName = `${pkg.name.substring('@aws-cdk/'.length)}`;
 
   packageJson.name += '-alpha';
+  if (ver.alphaVersion) {
+    packageJson.version = ver.alphaVersion;
+  }
   packageJson.repository.directory = `packages/individual-packages/${pkgUnscopedName}`;
 
   // All individual packages are public by default on v1, and private by default on v2.
@@ -201,7 +206,7 @@ function transformPackageJsonDependencies(packageJson: any, pkg: any, alphaPacka
         break;
       default:
         if (alphaPackages[dependency]) {
-          alphaDependencies[alphaPackages[dependency]] = pkg.version;
+          alphaDependencies[alphaPackages[dependency]] = packageJson.version;
         } else if (v1BundledDependencies.indexOf(dependency) !== -1) {
           // ...other than third-party dependencies, which are in bundledDependencies
           bundledDependencies[dependency] = packageJson.dependencies[dependency];
@@ -221,7 +226,7 @@ function transformPackageJsonDependencies(packageJson: any, pkg: any, alphaPacka
         break;
       default:
         if (alphaPackages[v1DevDependency]) {
-          alphaDevDependencies[alphaPackages[v1DevDependency]] = pkg.version;
+          alphaDevDependencies[alphaPackages[v1DevDependency]] = packageJson.version;
         } else if (!v1DevDependency.startsWith('@aws-cdk/') || isRequiredTool(v1DevDependency)) {
           devDependencies[v1DevDependency] = packageJson.devDependencies[v1DevDependency];
         }