Chore: Fix SR data models validation

[ncreated]

What and why?

🧰 This PR enables validation of SR data models in CI.

SRDataModels.swift is an auto-generated file created from RUM Events Format schema. This file should not be modified manually and to assure this, this PR enables CI validation with make sr-models-validate (the same way as we check RUM data models).

How?

1. (in rum-models-generator) The template file for SR models generation was updated with #if os(iOS) macro introduced in fix: DatadogObjc not fully available in 2.1.0 #1428
2. (in bitrise.yml) The make sr-models-validate is now run in separate CI step.
3. To make it pass, the manual change inserted to SRDataModels.swift in RUM-1507 Improved diffing #1524 was reverted.

- internal struct SRImageWireframe: Codable {
+ internal struct SRImageWireframe: Codable, Hashable {

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)
• Make sure each commit and the PR mention the Issue number or JIRA reference
• Add CHANGELOG entry for user facing changes

Custom CI job configuration (optional)

• Run unit tests for Core, RUM, Trace, Logs, CR and WVT
• Run unit tests for Session Replay
• Run integration tests
• Run smoke tests
• Run tests for tools/

[datadog-datadog-prod-us1]

Datadog Report

Branch report: ncreated/chore/fix-sr-models-validation
Commit report: b2ace1b

✅ dd-sdk-ios: 0 Failed, 0 New Flaky, 2652 Passed, 0 Skipped, 10m 16.4s Wall Time