Dashboard: Remove OPCreditsGrantedModal (#6945)

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## PR-Codex overview
This PR focuses on removing several components related to onboarding and image handling from the project, as well as updating the `layout.tsx` file to eliminate the use of the `OpCreditsGrantedModalWrapperServer` component.

### Detailed summary
- Deleted the following files:
  - `apps/dashboard/src/components/Image/index.tsx`
  - `apps/dashboard/public/assets/dashboard/confetti.gif`
  - `apps/dashboard/src/components/icons/brand-icons/OpenseaIcon.tsx`
  - `apps/dashboard/src/components/onboarding/OpCreditsGrantedModal.tsx`
  - `apps/dashboard/src/components/onboarding/OpCreditsGrantedModalWrapper.tsx`
  - `apps/dashboard/src/components/onboarding/OpCreditsGrantedModalWrapperServer.tsx`
- Removed the `<OpCreditsGrantedModalWrapperServer />` component from the `layout.tsx` file.

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Author: MananTank

apps/dashboard/public/assets/dashboard/confetti.gif

@@ -1,5 +1,4 @@
 import { getTeamBySlug } from "@/api/team";
-import { OpCreditsGrantedModalWrapperServer } from "components/onboarding/OpCreditsGrantedModalWrapperServer";
 import { PosthogIdentifierServer } from "components/wallets/PosthogIdentifierServer";
 import { redirect } from "next/navigation";
 import { Suspense } from "react";
@@ -42,9 +41,6 @@ export default async function RootTeamLayout(props: {
 
       <SaveLastVisitedTeamPage teamId={team.id} />
 
-      <Suspense fallback={null}>
-        <OpCreditsGrantedModalWrapperServer />
-      </Suspense>
       <Suspense fallback={null}>
         <EnsureValidConnectedWalletLoginServer />
       </Suspense>