fix: change in blockaid alert message

[jpuri]

Description

Change in blockaid alert message.

Related issues

Fixes: #2145

Manual testing steps

1. Enable blockaid and open test dapp
2. Submit a benign transaction
3. Check message after validation completes.

Screenshots/Recordings

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]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.38%. Comparing base (01c6724) to head (f5df43a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8725   +/-   ##
=======================================
  Coverage   41.38%   41.38%           
=======================================
  Files        1266     1266           
  Lines       30768    30768           
  Branches     3028     3028           
=======================================
  Hits        12733    12733           
  Misses      17275    17275           
  Partials      760      760           

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[github-actions]

E2E test started on Bitrise: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/f9720aab-c9bc-4382-b532-f294f003cd8b
You can also kick off another Bitrise E2E smoke test by removing and re-applying the (Run Smoke E2E) label

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[metamaskbot]

Missing release label release-7.17.0 on PR. Adding release label release-7.17.0 on PR and removing other release labels(release-7.18.0), as PR was cherry-picked in branch 7.17.0.