Add creator card subtitle clamp helper

[Chucks1093]

Summary
Add creator card subtitle clamp helper

Scope

• add helper for consistent subtitle line clamp behavior in creator cards\n- apply helper to card variants that share subtitle UI\n- keep typography and copy unchanged

Acceptance Criteria

• scoped change is implemented with no unrelated file churn
• docs/tests are updated where applicable
• contributor can validate the outcome locally

Contributor coordination: if you pick this up, reach out in Telegram for updates or clarification: https://t.me/accesslayerorg

[khanavi272-spec]

@khanavi272-spec has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I would like to work on this issue

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[bamiebot-maker]

@bamiebot-maker has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Kindly assign this to me

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[drips-wave]

Congratulations, @bamiebot-maker! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

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