fix: unused variable failure warning in webhooks file

[amitamrutiya]

Closes #901

📑 Description

In the files mutating_webhook.go and validating_webhook.go, there's a warning indicating that the variable failures is declared but never used. This suggests that in the current code structure, if an error occurs while creating services, we append the failure but continue the loop without storing it. Consequently, this failure is never recorded. In this pull request, I address this by storing this failure value before executing continue statements.

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

Also this pull request able to solve #917 issue.