fix: patch handling of missing token price

[bergeron]

Description

Patches MetaMask/core#3687

Fixes issue where importing 1 un-pricable token causes all tokens to lose prices.

Related issues

Fixes:

Manual testing steps

1. Open a wallet containing erc20 tokens
2. Import a token for which there is no pricing data (e.g. manually import 0xc7ad37edae28d8cd04bbe4a6ecf072314faed1be)
3. Switch to a different chain, then switch back
4. Tokens with pricing information should still show fiat $ value

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I’ve followed MetaMask Coding Standards.
• I've clearly explained what problem this PR is solving and how it is solved.
• I've linked related issues
• I've included manual testing steps
• I've included screenshots/recordings if applicable
• 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.
• I’ve properly set the pull request status:
  • In case it's not yet "ready for review", I've set it to "draft".
  • In case it's "ready for review", I've changed it from "draft" to "non-draft".

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.

[github-actions]

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (266154a) 40.42% compared to head (013573f) 40.42%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8421   +/-   ##
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  Coverage   40.42%   40.42%           
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  Files        1239     1239           
  Lines       29976    29976           
  Branches     2869     2869           
=======================================
  Hits        12117    12117           
  Misses      17168    17168           
  Partials      691      691           

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[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[tommasini]

LGTM!

[github-actions]

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