fix: align perp dex source labels(OK-59905)

[Kahnchan]

OK-59905

---

Issue

• OK-59905

Summary

• Preserve and display HIP-3 DEX source labels (xyz / para) in Wallet Home market favorites and perpetual categories.
• Reuse the existing perps display mapping so favorite and category rows render consistent source badges.
• Align the Native perps ticker badge line heights with the shared DEX badge.

Intent & Context

OK-59905 reports that Wallet Home market favorites and perpetual lists do not show the xyz / para source labels. During Native verification, the DEX badge in the perps ticker was also visibly shorter than its adjacent badges.

Root Cause

The Wallet Home perps mapper kept the display symbol but dropped the DEX prefix from the server token name. The Native ticker used implicit React Native text line heights for its local badges while the shared PerpDexBadge uses a fixed 16px line height.

Design Decisions

• Parse the source through the existing parseDexCoin utility and render it with the existing PerpDexBadge component.
• Reuse the same perps display mapper for favorites and category data to keep both paths consistent.
• Normalize only the local Native ticker badge line heights instead of changing the shared badge sizing across Market and Home surfaces.

Changes Detail

• Add perpsDexLabel to the Wallet Home market display model and forward it to the shared token identity row.
• Preserve xyz and para labels when mapping server perps tokens, with coverage for main-DEX tokens that should remain unlabeled.
• Set the Native perps ticker labels to a consistent 16px line height.

Risk Assessment

• Risk Level: Low
• Affected Platforms: Mobile, Desktop, Web, Extension
• Risk Areas: Wallet Home perps row rendering and Native perps ticker badge layout.

Test plan

• Run focused Jest coverage for Wallet Home and Market perps token mapping (2 suites, 7 tests).
• Run yarn agent:check --profile commit.
• Run yarn agent:check --profile pr.
• Verify Wallet Home favorites and perpetual categories show xyz / para badges on Native.
• Verify the Native perps ticker badges have matching heights.

[sidmorizon]

@codex review

[sidmorizon]

@codex security review

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Codex Review: Didn't find any major issues. Breezy!

Reviewed commit: 0c11316b0e

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