feat(cdp): slack integration fixes

[MarconLP]

Problem

We want our oauth app to be approved

OAuth app: https://app.slack.com/app-settings/TSS5W8YQZ/A03M3FN0RSQ/submission

Changes

fix issues:

• My app complies with Slack’s brand guidelines.
• If connecting Slack with private customer data, my app’s OAuth flow uses a state parameter.
• Only show private channels that the managing user has access to
• My app uses TLS 1.2 or higher for any redirect URIs, web pages, or endpoints.

Does this work well for both Cloud and self-hosted?

How did you test this code?

[github-actions]

Size Change: 0 B

Total Size: 9.73 MB

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Filename	Size
frontend/dist/toolbar.js	9.73 MB

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[posthog-bot]

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