privilege: change privilege for SHOW PROCESSLIST from SUPER to PROCESS

[hfxsd]

First-time contributors' checklist

• I've signed Contributor License Agreement that's required for repo owners to accept my contribution.

What is changed, added or deleted? (Required)

Which TiDB version(s) do your changes apply to? (Required)

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions (in Chinese).

• master (the latest development version)
• v8.5 (TiDB 8.5 versions)
• v8.4 (TiDB 8.4 versions)
• v8.3 (TiDB 8.3 versions)
• v8.2 (TiDB 8.2 versions)
• v8.1 (TiDB 8.1 versions)
• v7.5 (TiDB 7.5 versions)
• v7.1 (TiDB 7.1 versions)
• v6.5 (TiDB 6.5 versions)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)
• v5.3 (TiDB 5.3 versions)

What is the related PR or file link(s)?

• This PR is translated from:
• Other reference link(s):

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

@xhebox: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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[hfxsd]

/approve

[hfxsd]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hfxsd

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Needs approval from an approver in each of these files:

• OWNERS [hfxsd]

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #19197.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.2: #19198.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.3: #19199.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.5: #19200.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.4: #19201.