ENG-10639: Update Reflex UI twmerge utility to use clsx and tailwind-…

[carlosabadia]

Has better for support for tailwindv4

[linear-code]

ENG-10639

[chatgpt-codex-connector]

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[greptile-apps]

Greptile Summary

Updates the internal Tailwind class-merging utility and its dependency coverage.

• Replaces clsx-for-tailwind with a composed clsx and tailwind-merge implementation.
• Pins clsx 2.1.1 and tailwind-merge 3.6.0 in the documentation app lockfiles.
• Adds a unit test covering generated expressions and import metadata.

Confidence Score: 5/5

The PR appears safe to merge, with no concrete changed-code failure identified.

The replacement preserves supported class-input handling, emits valid default and named imports, and propagates pinned dependencies through the existing frontend package installation flow.

Important Files Changed

Filename	Overview
packages/reflex-components-internal/src/reflex_components_internal/utils/twmerge.py	Correctly composes the default clsx export with the named twMerge export while preserving Var import metadata.
tests/units/reflex_components_internal/utils/test_twmerge.py	Verifies class-input serialization and both required versioned frontend imports.
docs/app/reflex.lock/package.json	Adds the direct dependencies required by the updated utility while retaining a package still used elsewhere.
docs/app/reflex.lock/bun.lock	Consistently resolves the newly pinned direct dependencies and preserves existing transitive versions.

_{Reviews (1): Last reviewed commit: "ENG-10639: Update Reflex UI twmerge util..." | Re-trigger Greptile}

[codspeed-hq]

Merging this PR will not alter performance

✅ 26 untouched benchmarks
⏩ 8 skipped benchmarks¹

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_{Comparing carlos/update-twmerge (b3e0bbc) with main (416eb34)}

Footnotes

1. 8 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩