chore(studio): update downgrade survey to use 'what made you' framing (#43435)

## Summary

- Updates exit survey question wording from "why" framing to "what made
you" framing across both downgrade and project deletion flows
- Based on [Jason Cohen's
research](https://www.lennysnewsletter.com/p/why-your-product-stopped-growing)
showing this reframing roughly doubles response rates and improves
response quality by prompting users to recall a specific trigger event

### Changes

| Location | Before | After |
|---|---|---|
| ExitSurveyModal (downgrade) | "Share with us why you're downgrading
your plan." | "What made you decide to downgrade your plan?" |
| DeleteProjectModal (delete) | "Help us improve by sharing why you're
deleting your project." | "What made you decide to delete your project?"
|

### No downstream impact
- `CANCELLATION_REASONS` chip values unchanged
- API payload fields (`reasons`, `additionalFeedback`, `exitAction`)
unaffected
- No PostHog event names or properties tied to question wording

Closes GROWTH-657

## Test plan

- [ ] Trigger downgrade flow (paid plan → Free) and verify new wording
appears
- [ ] Trigger project deletion on a paid plan and verify new wording
appears
- [ ] Confirm survey submission still works end-to-end

apps/studio/components/interfaces/Settings/General/DeleteProjectPanel/DeleteProjectModal.tsx

@@ -1,17 +1,16 @@
-import { useRouter } from 'next/router'
-import { useEffect, useState } from 'react'
-import { toast } from 'sonner'
-
 import { LOCAL_STORAGE_KEYS } from 'common'
 import { CANCELLATION_REASONS } from 'components/interfaces/Billing/Billing.constants'
 import { TextConfirmModal } from 'components/ui/TextConfirmModalWrapper'
 import { useSendDowngradeFeedbackMutation } from 'data/feedback/exit-survey-send'
-import { useProjectDeleteMutation } from 'data/projects/project-delete-mutation'
 import type { OrgProject } from 'data/projects/org-projects-infinite-query'
+import { useProjectDeleteMutation } from 'data/projects/project-delete-mutation'
 import { useOrgSubscriptionQuery } from 'data/subscriptions/org-subscription-query'
 import { useLocalStorageQuery } from 'hooks/misc/useLocalStorage'
 import { useSelectedOrganizationQuery } from 'hooks/misc/useSelectedOrganization'
 import { useSelectedProjectQuery } from 'hooks/misc/useSelectedProject'
+import { useRouter } from 'next/router'
+import { useEffect, useState } from 'react'
+import { toast } from 'sonner'
 import type { Organization } from 'types'
 import { Input } from 'ui'
 
@@ -140,9 +139,7 @@ export const DeleteProjectModal = ({
       {!isFree && (
         <>
           <div className="space-y-1">
-            <h4 className="text-base">
-              Help us improve by sharing why you're deleting your project.
-            </h4>
+            <h4 className="text-base">What made you decide to delete your project?</h4>
           </div>
           <div className="space-y-4 pt-4">
             <div className="flex flex-wrap gap-2" data-toggle="buttons">