fix: signature event names

[segun]

Description

This PR fixes signature event names, but about three instances were missed. This PR fixes the missed instances.

Related issues

Fixes: 1127

##References
Signature events documentation in the segment schema repo: https://github.com/ConsenSys/segment-schema/tree/main/libraries/events/metamask-transactions

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Bitrise: https://app.bitrise.io/app/be69d4368ee7e86d/pipelines/b38039f9-89bc-4a80-8410-6fe017106714

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[sonarqubecloud]

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