Release: Patch 10.4.4

[github-actions]

This is an automated pull request that bumps the version from `10.4.3` to `10.4.4`.
Once this pull request is merged, it will trigger a new release of version `10.4.4`.
If you're not a core maintainer with permissions to release you can ignore this pull request.

To do

Before merging the PR, there are a few QA steps to go through:

• Add the "freeze" label to this PR, to ensure it doesn't get automatically forced pushed by new changes.
• Add the "ci:daily" label to this PR, to trigger the full test suite to run on this PR.

And for each change below:

1. Ensure the change is appropriate for the version bump. E.g. patch release should only contain patches, not new or de-stabilizing features. If a change is not appropriate, revert the PR.
2. Ensure the PR is labeled correctly with one of: "BREAKING CHANGE", "feature request", "bug", "maintenance", "dependencies", "documentation", "build", "unknown".
3. Ensure the PR title is correct, and follows the format "[Area]: [Summary]", e.g. "React: Fix hooks in CSF3 render functions". If it is not correct, change the title in the PR.
   • Areas include: React, Vue, Core, Docs, Controls, etc.
   • First word of summary indicates the type: “Add”, “Fix”, “Upgrade”, etc.
   • The entire title should fit on a line

This is a list of all the PRs merged and commits pushed directly to `next`, that will be part of this release:

• 🐛 Bug: Preview: Stop mixed CSF3+4 stories getting core annotations injected twice #35094
• 🐛 Bug: Telemetry: Add timeout to event-log POST to prevent build hang #35085
• 🏗️ Build: CI: Fix last unpinned action versions #35137
• 🏗️ Build: Build: Rewrite config overrides in SvelteKit sandbox #35127
• 🏗️ Build: Build: Resolve svelte config paths against the sandbox cwd in sandbox-parts #35130
• 🏗️ Build: Build: Anchor vite config injection on the plugins key in sandbox-parts #35132
• 🏗️ Build: Build: Fix formatting #35129

🍒 Manual cherry picking needed!

The following pull requests could not be cherry-picked automatically because it resulted in merge conflicts.
For each pull request below, you need to either manually cherry pick it, or discard it by replacing the "patch:yes" label with "patch:no" on the PR and re-generate this PR.

• #35094: `git cherry-pick -m1 -x a2971d9`
• #35137: `git cherry-pick -m1 -x da0e18e`

If you've made any changes doing the above QA (change PR titles, revert PRs), manually trigger a re-generation of this PR with this workflow and wait for it to finish. It will wipe your progress in this to do, which is expected.

Feel free to manually commit any changes necessary to this branch after you've done the last re-generation, following the Make Manual Changes section in the docs, especially if you're making changes to the changelog.

When everything above is done:

• Merge this PR
• Follow the run of the publish action

---

Generated changelog

10.4.4

• Preview: Stop mixed CSF3+4 stories getting core annotations injected twice - #35094, thanks JReinhold!
• Telemetry: Add timeout to event-log POST to prevent build hang - #35085, thanks badams!

[storybook-app-bot]

Package Benchmarks

^{Commit: 7845c99, ran on 11 June 2026 at 11:07:47 UTC}

The following packages have significant changes to their size or dependencies:

@storybook/builder-webpack5

	Before	After	Difference
Dependency count	184	184	0
Self size	79 KB	79 KB	🎉 -48 B 🎉
Dependency size	33.96 MB	33.99 MB	🚨 +34 KB 🚨
Bundle Size Analyzer	Link	Link

@storybook/angular

	Before	After	Difference
Dependency count	185	185	0
Self size	160 KB	160 KB	0 B
Dependency size	31.30 MB	31.32 MB	🚨 +21 KB 🚨
Bundle Size Analyzer	Link	Link

@storybook/ember

	Before	After	Difference
Dependency count	188	188	0
Self size	15 KB	15 KB	0 B
Dependency size	30.68 MB	30.71 MB	🚨 +34 KB 🚨
Bundle Size Analyzer	Link	Link

@storybook/nextjs

	Before	After	Difference
Dependency count	534	534	0
Self size	662 KB	662 KB	0 B
Dependency size	62.13 MB	62.17 MB	🚨 +34 KB 🚨
Bundle Size Analyzer	Link	Link

@storybook/react-webpack5

	Before	After	Difference
Dependency count	271	271	0
Self size	23 KB	23 KB	🎉 -12 B 🎉
Dependency size	46.67 MB	46.70 MB	🚨 +34 KB 🚨
Bundle Size Analyzer	Link	Link

@storybook/server-webpack5

	Before	After	Difference
Dependency count	196	196	0
Self size	15 KB	15 KB	0 B
Dependency size	35.22 MB	35.26 MB	🚨 +34 KB 🚨
Bundle Size Analyzer	Link	Link

@storybook/preset-react-webpack

	Before	After	Difference
Dependency count	164	164	0
Self size	18 KB	18 KB	0 B
Dependency size	32.48 MB	32.50 MB	🚨 +14 KB 🚨
Bundle Size Analyzer	Link	Link