Add modbus CONF_VERIFY_STATE to new switch config

[janiversen]

Breaking change

Proposed change

Missed CONF_VERIFY_STATE in new switch config, when
copying from old switch config.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

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# Example configuration.yaml

Additional information

• This PR fixes or closes issue: fixes #
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[probot-home-assistant]

Hey there @adamchengtkc, @vzahradnik, mind taking a look at this pull request as its been labeled with an integration (modbus) you are listed as a codeowner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[MartinHjelmare]

Side note: Please remove the space in the checkbox markdown so it can render as proper checkboxes in the PR description. Also put the PR change description under the correct header in the PR description.

[janiversen]

Done