ref(forms): Migrate organization join request off deprecatedforms to scraps form

[priscilawebdev]

Before

After

[sentry]

Bug: The trackAnalytics call for join_request.created sends an organization property, which mismatches the backend's expected organization_id and the frontend's TypeScript definition.
_{Severity: LOW}

Suggested Fix

Update the trackAnalytics call to send the correct properties as expected by the backend. This involves changing organization: orgId to organization_id: parseInt(orgId, 10) and adding the required member_id. Also, update the frontend TypeScript definition for the event to match the new payload structure to resolve the type error.

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's
not valid.

Location: static/app/views/organizationJoinRequest/index.tsx#L37-L40

Potential issue: The `trackAnalytics` call for the `'join_request.created'` event sends
a payload with an `organization` property. This is incorrect as the backend event schema
expects an integer `organization_id` and a `member_id`. Additionally, the frontend
TypeScript definition for this event only allows for a `referrer` property, creating a
type mismatch that should fail compilation. This discrepancy will cause the analytics
event to be recorded incorrectly, as the data sent from the frontend does not match the
schema expected by the backend.

_{Did we get this right? 👍 / 👎 to inform future reviews.}