Add opt-prof expiration data extension step to the release checklist

[AR-May]

We need to preserve one opt-prof data for every release branch that is in support. We should always have some opt-prof in VS Drop that we can use for the servicing if needed. Add an action to the release check list for preserving the opt-prof data.

[Copilot]

Pull Request Overview

Adds a step to the release checklist for preserving Opt-Prof data by extending its expiration in the VS Drop for servicing support.

• Introduces a new checkbox for extending Opt-Prof data expiration.
• Details how to locate the latest Opt-Prof drop, acquire the drop.exe tool, and apply the extension.

Comments suppressed due to low confidence (2)

documentation/release-checklist.md:137

• Add an example drop.exe command snippet showing how to update the expiration (e.g., drop update-expiration --id <drop-id> --expiration <YYYY-MM-DD>), so the manual step is clearer.

  - Use [this instruction](https://dev.azure.com/devdiv/DevDiv/_wiki/wikis/DevDiv.wiki/30808/Extend-a-drop's-expiration-date) to set the new expiration to (End of support date for the corresponding Visual Studio version) plus 3 months.

documentation/release-checklist.md:137

• Link to the official Visual Studio lifecycle page or a maintained reference so that the source of the "End of support date" is clear and stays up to date.

  - Use [this instruction](https://dev.azure.com/devdiv/DevDiv/_wiki/wikis/DevDiv.wiki/30808/Extend-a-drop's-expiration-date) to set the new expiration to (End of support date for the corresponding Visual Studio version) plus 3 months.