feat: capture page_url in events

[khushi1033]

Background

• Events currently don't capture page_url, so we have no visibility into where on a site an event was fired.
• This PR adds the capability to capture page_url from the client, and is related to PR1 and PR2— the mPServer PRs that handles the new field on the backend, propagating, sanitizing, and gating it for safety in case the URL contains PII.

What Has Changed

• Bumped @mparticle/event-models to ^1.3.0 (adds page_url?: string on CommonEventData).
• Added optional PageUrl?: string to the internal SDKEvent interface.
• Captured on the standard createEventObject path and on the createBackgroundASTEvent path. External callers using the toEventAPIObject escape hatch own the full event shape and are not modified
• convertBaseEventData maps sdkEvent.PageUrl → page_url in the events-API payload.
• New tests cover converter mapping (set + omitted) and capture-time behavior; existing fixtures left as-is since PageUrl is optional.

Screenshots/Video

Checklist

• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have added tests that prove my fix is effective or that my feature works.
• I have tested this locally.

Additional Notes

• {Any additional information or context relevant to this PR}

Reference Issue (For employees only. Ignore if you are an outside contributor)

• Closes https://go/j/[ticket-number]

[cursor]

PR Summary

Medium Risk
Every event may now carry full page URLs (potential query-string PII) until server-side sanitization/gating in related mPServer work; scope is additive across the main upload path but not security-critical infrastructure.

Overview
Adds page URL capture on the web SDK event pipeline so uploaded batches include where each event was fired, aligned with @mparticle/event-models 1.3.0 (page_url on common event data).

PageUrl is set on internal SDKEvent objects when events are built via createEventObject and on background application-state-transition events via getHref() (current window.location.href). convertBaseEventData maps that field to page_url in the events API payload. Dev/peer dependency on @mparticle/event-models is bumped from ^1.1.9 to ^1.3.0.

Tests assert capture at event creation, page_url on converted AST events, and converter behavior when PageUrl is present vs omitted.

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[cursor]

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[sonarqubecloud]

Quality Gate failed

Failed conditions
44.5% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud