Add pipeline_config_url and pipeline_config_sha claims to Ci::JwtV2

What does this MR do and why?

Add pipeline_config_url and pipeline_config_sha claims to Ci::JwtV2.

This change was previously introduced in !117923 (merged) and reverted due to a high volume of errors: 2023-05-19: ActionController::UrlGenerationError (gitlab-com/gl-infra/production#14474 - closed). This MR fixes the cause of the errors and adds a feature flag so we can roll out the changes incrementally.

Related to #404722 (closed)

Screenshots or screen recordings

"pipeline_config_url": "https://gitlab.example.com/my-group/my-project/-/blob/714a629c0b401fdce83e847fc9589983fc6f46bc/.gitlab-ci.yml",
"pipeline_config_sha": "714a629c0b401fdce83e847fc9589983fc6f46bc",

How to set up and validate locally

build = Ci::Build.last
Gitlab::Ci::Jwt.new(build, ttl: 1.hour).payload
Gitlab::Ci::JwtV2.new(build, aud: 'my-aud', ttl: 1.hour).payload

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.