fix(sdk): fix bug in checking values in _param_values. Fixes #6799

[michaelliqx]

Description of your changes:
change the checking data type from object to dict and list
Fix #6799

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[google-oss-prow]

Hi @michaelliqx. Thanks for your PR.

I'm waiting for a kubeflow member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[michaelliqx]

/assign @chensun

[lynnmatrix]

/ok-to-test

[chensun]

/lgtm

@michaelliqx, once this is merged, can you help cherrypick the change into sdk/release-1.8 branch? Thanks!

[chensun]

/lgtm

@michaelliqx, once this is merged, can you help cherrypick the change into sdk/release-1.8 branch? Thanks!

Also, can you add an entry in the release note for this change? Thanks!
https://github.com/kubeflow/pipelines/blob/master/sdk/RELEASE.md#bug-fixes-and-other-changes

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chensun

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