Update bind addresses to use POD_IP for helm

[seanlaii]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:
This PR updates the listening addresses for multiple components (metrics adapter, webhook, etc.) to use the Pod's IP address via the POD_IP environment variable. By binding to the specific Pod IP rather than a generic address like 0.0.0.0, the components are restricted to listening only on their assigned network interface. This improves security by reducing exposure and ensures that metrics and health probes are correctly bound to the right interface, aiding in more predictable network behavior.

Which issue(s) this PR fixes:
Part of #6266

Special notes for your reviewer:

• The changes affect all relevant deployments.
• Ensure that after these changes, all inter-component communications (e.g., metrics scrape, liveness, and readiness probes) continue to work as expected.

Does this PR introduce a user-facing change?:

NONE

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.42%. Comparing base (c31c8e4) to head (71cedc7).

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6324      +/-   ##
==========================================
- Coverage   48.44%   48.42%   -0.03%     
==========================================
  Files         677      677              
  Lines       56067    56067              
==========================================
- Hits        27164    27151      -13     
- Misses      27123    27134      +11     
- Partials     1780     1782       +2     

Flag	Coverage Δ
unittests	48.42% <ø> (-0.03%)	⬇️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[XiShanYongYe-Chang]

Hi @seanlaii have you installed it with the modified content?

[seanlaii]

Yes, it works locally. This is the image of the local pod statuses:

I first used hack/setup-dev-base.sh and installed the helm chart.

[XiShanYongYe-Chang]

Thanks a lot~
/lgtm
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: XiShanYongYe-Chang

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

The pull request process is described here

Needs approval from an approver in each of these files:

• charts/OWNERS [XiShanYongYe-Chang]

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