fix: switching networks from dapp permissions dapp icon has no effect (#22692)

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## **Description**

While connected to a dapp, if the user tries to switch networks from
dapp permissions, this has no effect. When switching networks, the icon
displayed is always the same. This happens because
`MultichainPermissionsSummary.tsx` uses `.hostname` while
`SelectedNetworkController` stores domains by origin (e.g.,
"https://example.com"). This mismatch prevents the lookup from finding
the per-dapp network.

This PR proposes a fix by using `.origin` instead.

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CHANGELOG entry: fix issue where switching networks from dapp
permissions dapp icon has no effect

## **Related issues**

Fixes: #22423

## **Manual testing steps**

```gherkin
Feature: fix switching networks from dapp permissions dapp icon having no effect

  Scenario: user switches network
    Given it's done via top right icon of In App Browser

    When user switches network
    Then network icon should update accordingly
```

## **Screenshots/Recordings**

<!-- If applicable, add screenshots and/or recordings to visualize the
before and after of your change. -->

### **Before**

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### **After**


https://github.com/user-attachments/assets/472ff108-8e39-4a96-899a-93c9983bb260

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## **Pre-merge author checklist**

- [ ] 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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if applicable
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Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Replaces hostname with full URL origin for dapp host handling in
MultichainPermissionsSummary, updating navigation params and tests.
> 
> - **MultichainPermissionsSummary**:
>   - Compute `hostname` as `URL.origin` instead of `URL.hostname`.
> - Pass origin to `useNetworkInfo`, titles, and navigation params for
`CONNECTION_DETAILS` and `REVOKE_ALL_ACCOUNT_PERMISSIONS`
(`hostInfo.metadata.origin`).
> - **Tests**:
> - Update expectations to use `https://mock-dapp.example.com` for
`origin` in navigation assertions.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
ffbe2d1. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: ffmcgee725

app/components/Views/MultichainAccounts/MultichainPermissionsSummary/MultichainPermissionsSummary.test.tsx

@@ -449,7 +449,7 @@ describe('MultichainPermissionsSummary', () => {
       params: expect.objectContaining({
         hostInfo: expect.objectContaining({
           metadata: expect.objectContaining({
-            origin: 'mock-dapp.example.com',
+            origin: 'https://mock-dapp.example.com',
           }),
         }),
         onRevokeAll: expect.any(Function),
@@ -475,7 +475,7 @@ describe('MultichainPermissionsSummary', () => {
       params: expect.objectContaining({
         hostInfo: expect.objectContaining({
           metadata: expect.objectContaining({
-            origin: 'mock-dapp.example.com',
+            origin: 'https://mock-dapp.example.com',
           }),
         }),
         onRevokeAll: expect.any(Function),

app/components/Views/MultichainAccounts/MultichainPermissionsSummary/MultichainPermissionsSummary.tsx

@@ -132,7 +132,7 @@ const MultichainPermissionsSummary = ({
 
   const hostname = useMemo(() => {
     try {
-      return new URL(currentPageInformation.url).hostname;
+      return new URL(currentPageInformation.url).origin;
     } catch {
       return currentPageInformation.url;
     }
@@ -252,9 +252,7 @@ const MultichainPermissionsSummary = ({
                 params: {
                   hostInfo: {
                     metadata: {
-                      origin:
-                        currentPageInformation?.url &&
-                        new URL(currentPageInformation?.url).hostname,
+                      origin: hostname,
                     },
                   },
                   connectionDateTime: new Date().getTime(),