FCE-3120 fix misconfigured publish

[czerwiukk]

Description

Pack with yarn, publish with npm.

Motivation and Context

NPM doesn't resolve yarn workspaces

Documentation impact

• Documentation update required
• Documentation updated in another PR
• No documentation update required

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to
  not work as expected)

[linear]

FCE-3120 Misconfigured publish in js-server-sdk

[Copilot]

Pull request overview

Adjusts the npm release workflow to avoid npm publish operating directly in a Yarn workspace context by packaging with Yarn first, then publishing the resulting tarball with npm (aligning with the stated motivation that npm doesn’t resolve Yarn workspaces correctly).

Changes:

• Add a yarn pack step to generate a package.tgz artifact for packages/js-server-sdk.
• Update the publish step to publish the tarball via npm publish ./package.tgz instead of publishing from the workspace directory contents directly.

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[MiloszFilimowski]

👍