fix: Update maxTagCount in UseCasesSelect component (#29962)

## Description
This pull request updates the maxTagCount prop in the UseCasesSelect
component to 6, allowing for a maximum of 6 tags to be displayed.
This change ensures that the component aligns with the desired behavior
and improves the user experience.

RCA: 
We noticed a weird positioning issue with the caret positioning, when we
set `maxTagCount: responsive`

We are keeping it fixed to mitigate this. We will take a look at fixing
this in the rc-select(design-system repo) itself.

#### PR fixes following issue(s)
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#### Type of change
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- Bug fix (non-breaking change which fixes an issue)
- New feature (non-breaking change which adds functionality)
- Breaking change (fix or feature that would cause existing
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- This change requires a documentation update
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## Testing
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#### How Has This Been Tested?
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- [ ] Manual
- [ ] JUnit
- [ ] Jest
- [ ] Cypress
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#### Test Plan
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#### Issues raised during DP testing
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## Checklist:
#### Dev activity
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag


#### QA activity:
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have been covered
- [ ] Test plan covers all impacted features and [areas of
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- [ ] Cypress test cases have been added and approved by SDET/manual QA
- [ ] Added `Test Plan Approved` label after Cypress tests were reviewed
- [ ] Added `Test Plan Approved` label after JUnit tests were reviewed


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Refactor**
- Updated the tag display behavior in the template publishing interface
to show a maximum of 6 tags for better visual clarity.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/src/pages/Editor/CommunityTemplates/Modals/PublishCommunityTemplate/components/TemplateInfoForm.tsx

@@ -130,7 +130,7 @@ const UseCasesSelect = ({
       data-testid="t--community-template-usecases-input"
       getPopupContainer={(triggerNode) => triggerNode.parentNode.parentNode}
       isMultiSelect
-      maxTagCount="responsive"
+      maxTagCount={6}
       maxTagTextLength={20}
       onChange={setTemplateUseCases}
       showSearch