PANA-5681: Update RUM and Session Replay schemas for heatmaps

[gonzalezreal]

What does this PR do?

Adds the permanent_id field to RUM action targets and permanentId to Session Replay leaf wireframes. These fields enable correlating user interactions with visual wireframes for heatmap support.

Schema changes match DataDog/rum-events-format#356, which ensures backwards-compatible field ordering (new fields appended as the last constructor parameter).

Motivation

Support mobile heatmaps. This is PR 2 of 4, schema foundation for the RUM and Session Replay integration PRs that follow.

Additional Notes

• Depends on PANA-5681: Add ViewIdentityResolver infrastructure #3202
• Ported from PANA-5681: Heatmaps #3164
• permanent_id added as the last property in _dd.action.target
• permanentId added as the last property in each leaf wireframe schema (shape, text, image, placeholder, webview)
• _common-wireframe-schema.json is intentionally NOT modified
• Schema files only + regenerated API surfaces. No code changes.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)