PIR: Clear emailExtractedData on step completion

[landomen]

Task/Issue URL: https://app.asana.com/1/137249556945/task/1213993026941875?focus=true

Description

Clear emailExtractedData on step completion

Steps to test this PR

Will be testable on later PRs once the whole feature is complete

UI changes

No UI changes

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Note

Low Risk
Low risk: small state-reset change limited to the PIR action runner state transition, with a matching unit test update.

Overview
Clears per-step emailExtractedData when a BrokerStepCompleted event advances to the next broker step, ensuring extracted email fields don’t leak into subsequent steps.

Updates the corresponding unit test to seed emailExtractedData and assert it is reset to an empty map on completion.

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Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• PIR: Add email fallback #8656
• PIR: Add getEmailData pixel #8642
• PIR: Fix email data handling #8641
• PIR: Clear emailExtractedData on step completion #8612 👈 (View in Graphite)
• PIR: Update completeRequestData to support scans and email extracted data #8583
• PIR: Add email polling mechanism #8581
• PIR: Add handling of GenerateEmail action #8294
• PIR: Add broker step action handler logic #8282
• PIR: Add state engine models for email flexibility #8233
• PIR: Add new email flexibility action models #8232
• develop

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