Move update-lock-registry command to beachball-auth-helper

[Elizabeth Craig (ecraig12345)]

update-lock-registry is a logically better fit under beachball-auth-helper than beachball.

[Copilot]

Pull request overview

Moves lock-file registry rewriting from Beachball’s hidden publish-helpers command into the more appropriate beachball-auth-helper binary.

Changes:

• Adds update-lock-registry and --revert to the auth-helper CLI.
• Resolves the package-manager workspace root before modifying npm or Yarn v1 lock files.
• Updates tests, snapshots, documentation, examples, and change files for the new command location.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/esrp-npm-release/README.md	Updates pipeline examples to invoke the auth-helper binary.
packages/beachball/src/options/optionDefinitions.ts	Removes options for the old nested command.
packages/beachball/src/options/commandDefinitions.ts	Removes the publish-helpers command definitions.
packages/beachball/src/cli.ts	Removes old command dispatch.
packages/beachball/src/authHelper/updateLockFileRegistry.ts	Moves registry rewriting and adds workspace-root discovery.
packages/beachball/src/authHelper/authHelperCli.ts	Adds the new auth-helper command.
packages/beachball/src/authHelper/authHelperBin.ts	Supplies the working directory to the CLI.
packages/beachball/src/__tests__/authHelper/authHelperCli.test.ts	Tests command options and delegation.
packages/beachball/src/__tests__/authHelper/__snapshots__/authHelperCli.test.ts.snap	Updates auth-helper help snapshots.
packages/beachball/src/__functional__/options/__snapshots__/getCliOptions.test.ts.snap	Removes snapshots for the old command.
packages/beachball/src/__functional__/authHelper/updateLockFileRegistry.test.ts	Updates functional coverage for workspace-root behavior.
docs/overview/v3-migration.md	Documents the auth-helper command set.
docs/concepts/ci-integration/auth-helper.md	Documents usage and options for registry rewriting.
change/beachball-1e7655e2-96ee-4b39-a442-3f99d5efb270.json	Updates Beachball’s release note.
change/@microsoft-esrp-npm-release-58af9747-619e-4f05-9d82-46e45ad4b1bc.json	Records the README update.

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