fix: Rewrite relative url() paths when inlining @StyleSheet imports in production bundle (#24165) (CP: 25.1)#24200
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vaadin-bot merged 1 commit into25.1from Apr 24, 2026
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…n production bundle (#24165) When a CSS file referenced by @Stylesheet contains @import statements that pull in other CSS files with relative url(...) references, the production build inlined the imports but left the urls untouched. After inlining, the browser resolves those urls relative to the entry file, breaking image paths. Add a new build-time entry point that rewrites url(...) references so each one is expressed relative to the entry CSS file's folder. Absolute urls, protocol urls (http, https, data, ftp, file) and urls whose resolved target falls outside the entry's base folder (e.g. npm package siblings) are left untouched. Fixes #24164
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This PR cherry-picks changes from the original PR #24165 to branch 25.1.
Original PR description