Fix invalid-workflow-config notice overlapping the fields in Set-remote and commit dialogs

[fiskus]

Summary

When a bucket's workflows/config.yml is malformed, the Set-remote popup and the commit dialog show an invalid-config notice naming the schema-violation reason. For a short reason it looked fine, but a long multi-line reason (e.g. a full JSON-schema violation path) overlapped the field above it instead of taking its own space.

Cause: the notice reused .qui-workflow-error, styled position: absolute; bottom: -8px — sized for a short one-line workflow error. Being out of normal flow it couldn't push siblings down, and bottom-anchored it grew upward over the Bucket field. It was the sole user of that class, and because the workflow selector is a shared component, it overlapped in both the popup and the commit dialog.

Fix: render .qui-workflow-error in normal flow (display: block, top margin, overflow-wrap: anywhere) — mirroring .qui-workflow-hint, which is exactly how the Unavailable state already renders its notice in the same box without overlap. One CSS rule; no markup change.

Found while running the workflow-support feature test against a bucket with a deliberately-broken config.

Testing

Verified in the running app (Set-remote popup and commit dialog): a long invalid-config reason now wraps below the field and claims its own vertical space — no overlap. Pure CSS; the notice's text/link and the enforcement behavior are unchanged. wasm clippy clean.

Versions

quilt-sync 0.18.3-alpha12.

Greptile Summary

This PR fixes the workflow config notice layout and bumps the app version.

• Changed .qui-workflow-error to render in normal flow with wrapping.
• Added a changelog entry for v0.18.3-alpha12.
• Updated the quilt-sync version in the manifest and lockfile.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
quilt-sync/ui/assets/css/components/workflow_select.css	Changes the malformed workflow-config notice from absolute positioning to normal-flow wrapped text.
quilt-sync/src-tauri/Cargo.toml	Bumps the quilt-sync package version to 0.18.3-alpha12.
Cargo.lock	Updates the locked quilt-sync package version to match the manifest.
quilt-sync/CHANGELOG.md	Adds the v0.18.3-alpha12 changelog note for the workflow notice layout fix.

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