Bump version for hotfix: typespec-java@0.45.8

[weidongxu-microsoft]

Hotfix (patch) release of @azure-tools/typespec-java 0.45.7 -> 0.45.8 from release/july-2026.

Includes the XML serialization sync fix (#4987).

Version bump via pnpm chronus version --ignore-policies:

• packages/typespec-java/package.json -> 0.45.8
• packages/typespec-java/CHANGELOG.md (Bug Fixes)
• removed the consumed .chronus/changes entry
• packages/typespec-java/emitter-tests/package.json -> 0.45.8 (version + @azure-tools/typespec-java .tgz dependency)

Core submodule unchanged. Backmerge to main to follow after publish.

[pkg-pr-new]

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npm i https://pkg.pr.new/@azure-tools/typespec-autorest@4990

npm i https://pkg.pr.new/@azure-tools/typespec-java@4990

commit: 39052a0

[azure-sdk-automation]

You can try these changes here

🛝 Playground	🌐 Website

[weidongxu-microsoft]

agent says that back-merge branch is not created

Found it — and there's a problem. There is no valid backmerge branch for your 0.45.8 hotfix. Here's what happened:

• Your #4990 merged at 13:13Z. The backmerge workflow ran → failed (run  29833493344 ).
• The earlier #4987 backmerge also failed (07:13Z).
• Both failed the same way: the branch  backmerge/release/july-2026-2026-07-21  already existed — created by today's first hotfix, autorest 0.70.1 (#4980, 00:48Z), which succeeded. The workflow pushes non-force, so any later same-day merge is rejected.

[timotheeguerin]

@weidongxu-microsoft the backmerge branch auto create been kinda flaky, i am also not sure it is really needed anymore with agents. I would just ask copilot to just merge the release branch changes into main with a new branch.
And maybe we can update the contributing guide

[weidongxu-microsoft]

@weidongxu-microsoft the backmerge branch auto create been kinda flaky, i am also not sure it is really needed anymore with agents. I would just ask copilot to just merge the release branch changes into main with a new branch. And maybe we can update the contributing guide

I was just asking the agent to find the backmerge branch (after the patch release) and help create the PR. And yes, one option is to manually create a back-merge branch.

The reasoning of the agent is that the 1st hotfix created the backmerge/release/july-2026-2026-07-21 branch. Hence any later hotfix on this same day would fail the auto create backmerge, because the branch name is already occupied.

Java emitter likely need another patch tomorrow, so we can take care of the backmerge then (then the backmerge branch should be backmerge/release/july-2026-2026-07-22).