Add support for breakageData parameter

[GuiltyDolphin]

Task/Issue URL: https://app.asana.com/1/137249556945/project/1212311623899110/task/1213015238129927?focus=true

Description

Adds support for the breakageData parameter which is passed from CSS.

The parameter is returned as part of the Content Scope Scripts breakage reporting feature as a pre-encoded string which should then be passed along as-is to the breakage report request without further encoding.

Steps to test this PR

Covered by unit tests and reference tests (duckduckgo/privacy-reference-tests#156).

I've manually tested the change and can see the breakageData parameter populated correctly.

1. Make sure you're using the latest Content Scope Scripts
2. Set the state of webDetection, webInterferenceDetection, and breakageReporting to "enabled" in the remote config
3. Visit https://duckduckgo.com/?q=disable%20adblocker
4. Add logcat filtering for breakageData
5. Make a breakage report. Verify that you can see the populated parameter (e.g., breakageData=%7B%22webDetection%22%3A%5B%7B%22detectorId%22%3A%22adwalls.generic_en%22%2C%22detected%22%3Atrue%7D%5D%2C%22detectorData%22%3A%7B%22botDetection%22%3A%7B%22detected%22%3Afalse%2C%22type%22%3A%22botDetection%22%2C%22results%22%3A%5B%5D%7D%2C%22fraudDetection%22%3A%7B%22detected%22%3Afalse%2C%22type%22%3A%22fraudDetection%22%2C%22results%22%3A%5B%5D%7D%2C%22adwallDetection%22%3A%7B%22detected%22%3Atrue%2C%22type%22%3A%22adwallDetection%22%2C%22results%22%3A%5B%7B%22detected%22%3Atrue%2C%22detectorId%22%3A%22generic%22%7D%5D%7D%2C%22youtubeAds%22%3A%7B%22detected%22%3Afalse%2C%22type%22%3A%22youtubeAds%22%2C%22results%22%3A%5B%5D%7D%7D%7D&test=1)

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Note

Medium Risk
Medium risk because it changes the broken-site reporting payload and encoding path; incorrect handling could break report submission or produce malformed analytics data.

Overview
Adds end-to-end support for a new breakageData field in broken-site reporting, captured from content-scope-scripts and stored in BrokenSiteContext.

Plumbs breakageData through report construction (BrokenSiteData/BrokenSite) and updates the sender to include it in encodedParams without re-encoding (treating it as pre-encoded). Updates unit/reference tests to cover null vs present breakageData behavior.

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