[INT-8651] HRIS Employment Hero Connection Guide updates

[sourabh-stackone]

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Summary by cubic

Updated the Employment Hero (Hub T2) HRIS connection guide to match the new UI, per INT-8651. Simplifies Org ID lookup, updates the app creation flow (review and create), adds a recommended OAuth scope list, and refreshes screenshots to guide generating Client ID/Secret and connecting in StackOne.

^{Written for commit ebcd87a. Summary will update on new commits.}

[Copilot]

Pull request overview

This PR updates the Employment Hero HRIS connection guide to reflect the latest Employment Hero Developer Portal flow and recommended OAuth scopes, and refreshes the supporting screenshots.

Changes:

• Updates the “Generate Client ID and Secret” section with the new UI flow and adds a recommended scope list.
• Replaces/introduces new screenshots used by the guide (image2.png, image8.png).
• Simplifies the “Find your Organization ID” instructions into plain text (removing the prior <Steps>/<Tip> block).

Reviewed changes

Copilot reviewed 1 out of 5 changed files in this pull request and generated no comments.

File	Description
connection-guides/hris/employmenthero.mdx	Updates the guide steps, adds recommended scopes, and points to new screenshots.
images/employmenthero/image2.png	Updated screenshot referenced by the “Click Add Application” step.
images/employmenthero/image8.png	New/updated screenshot referenced by the “Copy your Client ID and Client Secret” step.

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