Forms: remove dependency injection webpack plugin

[enejb]

This PR removed the inclusion of the DependencyInjection plugin since this is something that is already handled by the
jetpackWebpackConfig.StandardPlugins code.

Proposed changes:

• Remove the DependencyInjection in favour of the jetpackWebpackConfig.StandardPlugins inclusion.

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

p1752504347300399-slack-C052XEUUBL4

Does this pull request change what data or activity we track or use?

No

Testing instructions:

1. Make sure that the build still happends as expected.
2. Note that the modules do not include the already existing code. Code size should not increase.

[Copilot]

Pull Request Overview

This PR streamlines how the DependencyExtractionWebpackPlugin is applied by leveraging the existing jetpackWebpackConfig.StandardPlugins mechanism, removing manual instantiation and the direct package dependency.

• Remove manual import and instantiation of DependencyExtractionWebpackPlugin
• Enable DependencyExtractionPlugin via StandardPlugins
• Clean up package.json and add a changelog entry

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
projects/packages/forms/tools/webpack.config.modules.js	Remove manual plugin import and instantiation; toggle plugin via StandardPlugins
projects/packages/forms/package.json	Remove direct dependency on @wordpress/dependency-extraction-webpack-plugin
projects/packages/forms/changelog/fix-forms-dependency-injection	Add changelog entry for this fix

Comments suppressed due to low confidence (2)

projects/packages/forms/tools/webpack.config.modules.js:108

• Consider adding an automated test to verify that enabling DependencyExtractionPlugin via StandardPlugins correctly includes the DependencyExtractionWebpackPlugin in the final webpack configuration.

					DependencyExtractionPlugin: true,

projects/packages/forms/changelog/fix-forms-dependency-injection:4

• [nitpick] The changelog entry could be clearer by specifying that it removes the manual DependencyExtractionWebpackPlugin instantiation, e.g. "Remove manual DependencyExtractionWebpackPlugin instantiation."

Forms: Remove the dependency-injection inclusion

[github-actions]

Thank you for your PR!

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[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WoA dev site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin (Jetpack or WordPress.com Site Helper), and enable the fix/forms-dependency-injection branch.
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bin/jetpack-downloader test jetpack fix/forms-dependency-injection

bin/jetpack-downloader test jetpack-mu-wpcom-plugin fix/forms-dependency-injection

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[jp-launch-control]

Code Coverage Summary

This PR did not change code coverage!

That could be good or bad, depending on the situation. Everything covered before, and still is? Great! Nothing was covered before? Not so great. 🤷

Full summary · PHP report · JS report

[anomiex]

Build artifacts in a local build look unchanged