fix: extraArgs should be map[string]string

[redscholar]

What type of PR is this?

/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for reviewers:

Does this PR introduced a user-facing change?

extraArgs should be map[string]string

Additional documentation, usage docs, etc.:

[kubesphere-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[gemini-code-assist]

Code Review

This pull request updates the Kubernetes kubeadm initialization templates (kubeadm-init.v1beta3 and kubeadm-init.v1beta4) by wrapping boolean and integer values (such as profiling, service-account-lookup, audit-log-maxbackup, and terminated-pod-gc-threshold) in double quotes to ensure they are treated as strings. I have no feedback to provide as there are no review comments to address.