PIR: Fix email data handling

[landomen]

Task/Issue URL: https://app.asana.com/1/137249556945/task/1214973541222175?focus=true

Description

Fix email data handling so email codes are properly passed along to the web layer.

Steps to test this PR

Will be testable on upstack PRs.

UI changes

No UI changes

---

Note

Medium Risk
Changes how opt-out/scan automation data is serialized to the in-WebView script layer; wrong mapping could break form fills or email confirmation, but scope is limited to PIR request assembly with strong unit coverage.

Overview
PIR broker script payloads now map each fillForm dataSource to its own field on UserProfile, instead of folding generated email and polled email fields into extractedProfile.

New DataSource values fetchedEmail and emailData drive completeRequestData: generated addresses go in FetchedEmail, verification codes and similar keys from getEmailData go in emailData, and extractedProfile is only populated for extractedProfile. emailExtractedData was removed from ExtractedProfileParams so the web layer can resolve data[dataSource] the way broker JSON expects.

Unit tests were updated to assert per-source isolation (e.g. verification codes are not leaked on extracted-profile fills).

^{Reviewed by Cursor Bugbot for commit b1d0efa. Bugbot is set up for automated code reviews on this repo. Configure here.}

[landomen]

• PIR: Add email fallback #8656
• PIR: Add getEmailData pixel #8642
• PIR: Fix email data handling #8641 👈 (View in Graphite)
• PIR: Clear emailExtractedData on step completion #8612
• 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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[marcosholgado]

LGTM

[landomen]

Merge activity

• May 26, 8:20 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• May 26, 9:56 AM UTC: Graphite rebased this pull request as part of a merge.
• May 26, 10:09 AM UTC: @landomen merged this pull request with Graphite.