Misc Changes

• Consider merging chunks when overlap == 1: #95102
• [turbopack] Add support for single-entry chunks: #94727
• Turbopack: add TURBOPACK_DEBUG_CSS_CHUNKING env var: #95080
• [cd] publish on release tags instead of branch push: #95085

Credits

Huge thanks to @sampoder, @sokra, and @eps1lon for helping!