Customer account confirm - StateException should not be logged as critical error

[mvenghaus]

Description (*)

The error "The account is already active," etc., should not be logged as a critical exception since it is more of a user error rather than a programming issue that needs to be addressed.
Instead of using "addException" which logs the StateExpection I changed to to a normal error message.

Manual testing scenarios (*)

• Create a customer account
• Confirm
• Confrm again

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• All automated tests passed successfully (all builds are green)

Resolved issues:

1. resolves [Issue] Customer account confirm - StateException should not be logged as critical error #39487: Customer account confirm - StateException should not be logged as critical error

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