fix:improved padding between uri and filed

[HarshMN2345]

What does this PR do?

Fixes inconsistent spacing for the URI field in OAuth provider configuration modals. The URI section now has proper spacing that matches other form elements in the modal.

Changes made:

• Updated Auth0 OAuth provider modal to use CopyInput's built-in label prop instead of a wrapper <div> with a separate <p> element.
• Applied the same fix to the Apple OAuth provider modal.
• Removed unnecessary wrapper <div> elements that were preventing proper spacing using the modal’s u-gap-24 system.

Before: The URI field had inconsistent spacing compared to other inputs (Client ID, Client Secret, etc.)
After: All form elements now have uniform spacing using the Modal component’s layout system.

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Test Plan

1. Navigate to Project Settings → Authentication → Auth Providers.
2. Click "Update" on the Auth0 OAuth provider.
3. Verify that the URI field has consistent spacing with other form inputs (Client ID, Client Secret, Auth0 Domain).
4. Repeat for the Apple OAuth provider.
5. Confirm spacing matches other form inputs (Services ID, Key ID, Team ID, P8 File).
6. Check on both desktop and mobile viewports to ensure responsive behavior.

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Related PRs and Issues

Fixes: SER-7 – Missing padding below OAuth callback (addresses spacing inconsistency in OAuth provider modals)

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Yes, I have read and understand the contributing guidelines.