Meteor 3.4.1 is out: Rspack consolidation, revitalized examples, and important fixes

Meteor 3.4.1 is the first patch following the Meteor 3.4 release, focused on consolidating the bundler experience introduced. After Meteor 3.4 introduced the Rspack bundler into core, our team and community have been actively testing and improving it. This patch addresses the feedback collected since then, making the Rspack experience smoother and more reliable across different setups. It also ships revitalized application examples and skeletons, and fixes a DDP session memory leak that affected