ci: Remove using PACKAGE_READ_TOKEN for core preview builds

[Cal-L]

Description

This PR removes the need for the PACKAGE_READ_TOKEN in Bitrise CI. According to Mark, it was used to support the older version of preview builds, which used GitHub's registry and required authentication. But we have since switched to using npm for preview builds, so no special authentication is needed.

Related issues

Fixes:

Manual testing steps

• Check that E2E smoke tests still works
• Check that QA builds still works

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]

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 ✅

Comparison is base (97d3a47) 39.61% compared to head (3ad0d94) 39.61%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8089   +/-   ##
=======================================
  Coverage   39.61%   39.61%           
=======================================
  Files        1233     1233           
  Lines       29830    29830           
  Branches     2840     2840           
=======================================
  Hits        11816    11816           
  Misses      17321    17321           
  Partials      693      693           

☔ View full report in Codecov by Sentry.
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[github-actions]

E2E test started on Bitrise: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/20054aca-1517-4825-8e35-383a6fb0d181
You can also kick off another Bitrise E2E smoke test by removing and re-applying the (Run Smoke E2E) label

[Cal-L]

QA builds - https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/2f0d6083-ab00-4f4e-98fb-67a799951cf2

[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

[github-actions]

E2E test started on Bitrise: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/64edb9a5-f1b4-4471-885f-9ce2f23c6fa6
You can also kick off another Bitrise E2E smoke test by removing and re-applying the (Run Smoke E2E) label

[sethkfman]

LGTM