Turbopack shared runtime & CJS tree shaking on by default

Misc Changes

• Flush pending revalidations for forwarded action error responses: #96945
• Handle Server Actions on dynamic PPR fallback routes: #96932
• Turbopack: Improve how DiskWatcher is configured and fix polling watcher bugs: #96440
• Turbopack: Allow DiskWatcher to use a mocked DiskFileSystem, add a small unit test: #96353
• [turbopack] Add e2e test that uses component chunks + workers: #96556
• [turbopack] Support experimental.serverMinification & expand experimental.turbopackMinify: #96578
• Add a turbopackChunking documentation page for pages router: #96698
• [turbopack] Don't run Webpack tests on Turbopack-only changes: #96656
• [turbopack] Enable the shared runtime by default: #96778
• [turbopack] Enable CJS tree shaking by default: #96779
• [ci] Default deploy e2e tests to the repo next version: #96895
• refactor: clean up places that needlessly list all RenderStages: #96907
• Fix the documented invocation for generating tests non-interactively: #96896
• Make NextConfigComplete typing more accurate: #96700
• Upgrade to swc 75: #96702
• docs: link View Transitions skill on skills.sh and clarify the example prompt: #96863
• [ci] Reset the turbopack deploy test project in the weekly cron: #96822
• docs: add authentication with Cache Components guide and iron-session example: #95802

Credits

Huge thanks to @ztanner, @bgw, @sampoder, @eps1lon, @lubieowoce, @unstubbable, @mischnic, @aurorascharff, and @icyJoseph for helping!