fix: show current network if domains are undefined

[NidhiKJha]

If Experimental settings Select Networks for each site is off, the domains are undefined. In this case, the fallback network should be the current network.

Related issues

Fixes: #25887

Manual testing steps

1. Connect MetaMask to Dapp
2. Go to Permissions, check the logo of network is specific to connected network
3. Turn the experimental setting off, Go back to all permissions page. Now the network logo should be same as globally selected network for all the dapps

Screenshots/Recordings

Before

After

Screen.Recording.2024-07-19.at.12.07.35.AM.mov

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). 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.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 69.70%. Comparing base (e562224) to head (2b9f4ed).

Files	Patch %	Lines
ui/selectors/selectors.js	83.33%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #25960      +/-   ##
===========================================
- Coverage    69.70%   69.70%   -0.00%     
===========================================
  Files         1400     1400              
  Lines        49464    49467       +3     
  Branches     13687    13690       +3     
===========================================
+ Hits         34478    34479       +1     
- Misses       14986    14988       +2     

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[metamaskbot]

Builds ready [2b9f4ed]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• code coverage: Report
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5
  • common: 0, 1, 10, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (66 ± 9 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	69	122	95	18	9
		domContentLoaded	9	62	30	18	9
		load	39	92	66	18	9
		domInteractive	9	61	29	18	9

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 0 Bytes (0.00%)
• ui: 0 Bytes (0.00%)
• common: 130 Bytes (0.00%)