Trim the input of operationId filter in OpenAPINormalizer (#20186)

[danielalmqvist]

#20186

Additional test added to test the trim-functionality.

Generation Details
FILTER=operationId: addPet| getPetById

Steps to reproduce
Use openapiNormalizer and FILTER and set them on separate lines.
Expected the operationIdFilters to contain addPet and getPetById.
Actually the operationIdFilters contains addPet and \n\t\t\t\t\t\t\tgetPetById

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[wing328]

Thanks for the PR but your commit (as shown in the Commits tab) is not linked to your Github account, which means this PR won't count as your contribution in https://github.com/OpenAPITools/openapi-generator/graphs/contributors.

Let me know if you need help fixing it.

Ref: https://github.com/OpenAPITools/openapi-generator/wiki/FAQ#how-can-i-update-commits-that-are-not-linked-to-my-github-account

[danielalmqvist]

thank you, updated the commiter now

[wing328]

thanks for the PR, which has been merged