Fix tracking consent link in Browser SDK setup partial

[rphdbddog]

What does this PR do? What is the motivation?

The "tracking consent value at initialization" link in the Browser SDK setup partial pointed at the browser section landing page (/real_user_monitoring/application_monitoring/browser), which contains no tracking consent content. It now points to the section that documents the trackingConsent initialization parameter, its granted / not-granted values, and the setTrackingConsent() API:

/real_user_monitoring/application_monitoring/browser/advanced_configuration/#user-tracking-consent

Merge instructions

This changes a shared partial (layouts/shortcodes/mdoc/en/sdk/setup/browser.mdoc.md), so the fix applies to every page that includes it:

• real_user_monitoring/application_monitoring/browser/setup/ (en)
• real_user_monitoring/application_monitoring/browser/setup/client/ (en, fr, es, ja, ko)
• client_sdks/setup/ (en)

Note that client_sdks/setup/ sits outside RUM, so an additional reviewer may be needed.

Merge readiness:

• Ready for merge

Additional notes

[jhgilbert]

[Automated message] This PR has merge conflicts caused by the recent docs repo reorg (files moved from the repo root into hugo/). A new PR with your commits translated to the correct paths has been opened: #38856

Please follow the instructions in the PR description.

This is an automated comment, but if you have a question, you can mention me in this PR (external contributors) or reach out in #docs-repo-reorg-support on Slack (internal contributors).