Store only key-value pairs in Hash arrays

[OskarEichler]

Summary

Remove the nested result.push in Hash#toArray.

The inner push already appends the key and value; pushing its numeric return value again inserts cumulative array lengths. The corrected method produces the intended flat key/value sequence while preserving the serialized JSON output.

The generated Action Text asset is rebuilt with the same one-line change.

Verification

• focused model: ["a", 1, 2, "b", 2, 5] becomes ["a", 1, "b", 2]; JSON remains identical
• complete Chromium suite: 501 total, 472 pass, 0 fail, 29 conditional skips
• frozen Yarn install, ESLint, Rollup/Sass/assets and gem build pass
• Action Text wrapper test and Rails loading pass on Ruby 4.0.6 and Ruby 3.2.11

No public API or dependency change.

[Copilot]

Pull request overview

Fixes Hash#toArray so it returns only flattened key-value pairs and keeps the packaged Action Text asset synchronized.

Changes:

• Removes the nested push that inserted array lengths.
• Rebuilds the generated Action Text bundle.

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Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/trix/core/collections/hash.js	Corrects Hash#toArray.
action_text-trix/app/assets/javascripts/trix.js	Synchronizes the generated asset.

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[OskarEichler]

Added the requested exact regression assertion for Hash({ a: 1, b: 2 }).toArray(). ESLint passes and the JavaScript and test bundles build successfully.