fix: allow workflow_dispatch for v1.14 SWA deployment

[paulyuk]

Problem

The build job condition only allows push and pull_request events:

if: github.event_name == 'push' || (github.event_name == 'pull_request' && github.event.action != 'closed')

workflow_dispatch is excluded, so manual triggers skip the build.

Fix

Use the same condition as website-root.yml:

if: github.event.action != 'closed'

This works for all event types (push, pull_request, workflow_dispatch) and only skips the closed PR action.

Context

Needed after migrating SWAs to the new Azure subscription. When merged, the push event will trigger deployment to the new SWA.

[github-actions]

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