feat: add share button and share sheet to Token Details page (#31868)

add share button and share sheet to Token Details page

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## **Description**

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CHANGELOG entry: add share button and share sheet to Token Details page

## **Related issues**

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Fixes:

## **Manual testing steps**

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```gherkin
Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]
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### **After**

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https://github.com/user-attachments/assets/39ee3c37-7df8-4c52-ae66-87304128176a




## **Pre-merge author checklist**

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- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
Coding
Standards](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [ ] I've completed the PR template to the best of my ability
- [ ] I've included tests if applicable
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Not required for external contributors.

#### Performance checks (if applicable)

- [ ] I've tested on Android
  - Ideally on a mid-range device; emulator is acceptable
- [ ] I've tested with a power user scenario
- Use these [power-user
SRPs](https://consensyssoftware.atlassian.net/wiki/spaces/TL1/pages/edit-v2/401401446401?draftShareId=9d77e1e1-4bdc-4be1-9ebb-ccd916988d93)
to import wallets with many accounts and tokens
- [ ] I've instrumented key operations with Sentry traces for production
performance metrics
- See [`trace()`](/app/util/trace.ts) for usage and
[`addToken`](/app/components/Views/AddAsset/components/AddCustomToken/AddCustomToken.tsx#L274)
for an example

For performance guidelines and tooling, see the [Performance
Guide](https://consensyssoftware.atlassian.net/wiki/spaces/TL1/pages/400085549067/Performance+Guide+for+Engineers).

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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> User-facing share and analytics only; no auth, payments, or sensitive
data handling beyond existing token route params.
> 
> **Overview**
> Adds a **share** action on Token Details so users can share a MetaMask
deep link to the current asset.
> 
> `TokenDetailsInlineHeader` now accepts optional `onSharePress` and
shows a share icon alongside the price-alert control (same ambient-color
gating as other header actions). `TokenDetails` wires `handleShare`: it
no-ops if CAIP-19 `assetId` cannot be resolved, otherwise opens the
native share sheet with `https://link.metamask.io/asset?assetId=…`
(encoded), uses `{ url }` on iOS and `{ message }` on Android, and emits
**`TOKEN_DETAILS_SHARED`** with chain, symbol, and address.
> 
> Analytics registers the new event in `MetaMetrics.events`. Tests cover
share URL encoding, Android vs iOS payloads, analytics, header
visibility, plus expanded `TokenDetails` coverage for close/open
tracking, CTAs, disclaimer, and non-EVM rendering.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
0f471cb. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: salimtb