Mergeback v3.30.3 refs/heads/releases/v3 into main

[github-actions]

This PR bumps the version number and updates the changelog after the v3.30.3 release.

Please do the following:

• Remove and re-add the "Rebuild" label to the PR to trigger just this workflow.
• Wait for the "Rebuild" workflow to push a commit updating the distribution files.
• Mark the PR as ready for review to trigger the full set of PR checks.
• Approve and merge the PR. When merging the PR, make sure "Create a merge commit" is
  selected rather than "Squash and merge" or "Rebase and merge".

[github-actions]

Pushed a commit to rebuild the Action. Please mark the PR as ready for review to trigger PR checks.

[Copilot]

Pull Request Overview

This is a mergeback PR that incorporates the v3.30.3 release changes back into the main branch. The PR bumps the version number to prepare for the next development cycle and updates the changelog to reflect the latest release.

Key changes:

• Version number increment from 3.30.3 to 3.30.4 in package.json
• Addition of new UNRELEASED section in changelog with placeholder content

Reviewed Changes

Copilot reviewed 12 out of 14 changed files in this pull request and generated no comments.

File	Description
package.json	Updates version number from 3.30.3 to 3.30.4 for next development cycle
CHANGELOG.md	Adds new UNRELEASED section with placeholder text for future changes

Files not reviewed (1)

• package-lock.json: Language not supported