codecov: make project coverage status informational

[purelind]

What problem does this PR solve?

Issue Number: ref https://github.com/pingcap/tiflow/issues/10473

What is changed and how it works?

To make the codecov status of project just informational in github commit statuses on components and flags level, not fail the commit statuses.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• [x] No code

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

None

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Once this PR has been reviewed and has the lgtm label, please assign suzaku for approval. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment Approvers can cancel approval by writing /approve cancel in a comment

[purelind]

/retest

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 57.5255%. Comparing base (833943f) to head (914e375). Report is 102 commits behind head on master.

Additional details and impacted files

Components	Coverage Δ
cdc	61.8655% <ø> (-0.0928%)	:arrow_down:
dm	51.2192% <ø> (-0.0187%)	:arrow_down:
engine	63.2570% <ø> (-0.1597%)	:arrow_down:

Flag	Coverage Δ
unit	57.5255% <ø> (-0.0602%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

@@               Coverage Diff                @@
##             master     #10651        +/-   ##
================================================
- Coverage   57.5856%   57.5255%   -0.0602%     
================================================
  Files           849        853         +4     
  Lines        126707     127008       +301     
================================================
+ Hits          72965      73062        +97     
- Misses        48279      48498       +219     
+ Partials       5463       5448        -15