Marketplace UI changes. (#9381)

<!-- Clearly explain the need for these changes: -->
- Consolidated PR #8967 and #8968.
- Fixed issues #9370 and #9371
- Fixed padding for StoreCard.

### Changes 🏗️

<!-- Concisely describe all of the changes made in this pull request:
-->

### Checklist 📋

#### For code changes:
- [ ] I have clearly listed my changes in the PR description
- [ ] I have made a test plan
- [ ] I have tested my changes according to the test plan:
  <!-- Put your test plan here: -->
  - [ ] ...

<details>
  <summary>Example test plan</summary>
  
  - [ ] Create from scratch and execute an agent with at least 3 blocks
- [ ] Import an agent from file upload, and confirm it executes
correctly
  - [ ] Upload agent to marketplace
- [ ] Import an agent from marketplace and confirm it executes correctly
  - [ ] Edit an agent from monitor, and confirm it executes correctly
</details>

#### For configuration changes:
- [ ] `.env.example` is updated or already compatible with my changes
- [ ] `docker-compose.yml` is updated or already compatible with my
changes
- [ ] I have included a list of my configuration changes in the PR
description (under **Changes**)

<details>
  <summary>Examples of configuration changes</summary>

  - Changing ports
  - Adding new services that need to communicate with each other
  - Secrets or environment variable changes
  - New or infrastructure changes such as databases
</details>

---------

Co-authored-by: Muhammad Safi <muhammadsafi@Muhammads-MacBook-Pro.local>
Co-authored-by: Aarushi <50577581+aarushik93@users.noreply.github.com>

autogpt_platform/frontend/src/components/agptui/StoreCard.tsx

@@ -71,15 +71,14 @@ export const StoreCard: React.FC<StoreCardProps> = ({
       {/* Content Section */}
       <div className="w-full px-2 py-4">
         {/* Title and Creator */}
-        <h3 className="font-poppins mb-2 text-2xl font-semibold leading-tight text-[#272727] dark:text-neutral-100">
+        <h3 className="font-poppins mb-0.5 text-2xl font-semibold leading-tight text-[#272727] dark:text-neutral-100">
           {agentName}
         </h3>
         {!hideAvatar && creatorName && (
-          <p className="font-lead mb-4 text-base font-normal text-neutral-600 dark:text-neutral-400">
+          <p className="font-lead mb-2.5 text-base font-normal text-neutral-600 dark:text-neutral-400">
             by {creatorName}
           </p>
         )}
-
         {/* Description */}
         <p className="font-geist mb-4 line-clamp-3 text-base font-normal leading-normal text-neutral-600 dark:text-neutral-400">
           {description}