chore: make node-bundle's "build" script behave as others (aws#19307)

The default `projen` build step re-generates the `package.json` file and
re-install dependencies, which breaks in case the `align-versions.sh`
script was run (as the re-generated `package.json` has version `0.0.0`
again).

This inserts a hack to reset the `build` script and make it a synonym
to the `compile` script.

This was breaking the `jsii` integration tests (they try to build, but
not test, `aws-cdk`).

tools/@aws-cdk/node-bundle/.projenrc.js

@@ -24,6 +24,15 @@ const project = new typescript.TypeScriptProject({
 
 project.gitignore.exclude('.vscode/');
 
+// Ensure `npm run build` behaves the same as in other packages. Failure to do
+// so results in re-generating the `package.json` with `version: 0.0.0` which
+// undoes the work of `align-versions.sh` and breaks jsii integration tests.
+// This can be removed if the `@aws-cdk/node-bundle` is moved out of this mono
+// repository.
+project.buildTask._locked = false; // <-- !HAXX! there is (understandably) not API to unlock...
+project.buildTask.reset();
+project.buildTask.prependSpawn(project.compileTask);
+
 // needed for CLI tests to run
 project.testTask.prependSpawn(project.compileTask);