Change logics of the contract blacklist function

[tezohwang]

Summary

Change logics of the contract blacklist function, to make a target contract inactive directly by a gov process

Problem Definition

Current logic of the contract blacklist function authorize a specific 'account' to make a target contract inactive by a gov process.
It's different from our current policy of LBM

Proposal

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For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned