Add creator profile heading line-height consistency

[opascal221-design]

Summary
Add creator profile heading line-height consistency

Scope

• normalize profile heading line-height across breakpoints\n- prevent clipping for long headings\n- keep font-size tokens 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