This PR updates a few things to catch some corner cases:

• Remove the check for the same author when looking for existing comments
  • There is a check further up in the webhook comment processor to skip comments from jira made by the same user that created the jira instance in dojo. This is great for all smaller teams, but not larger ones
  • In cases where this is not true, like when a service account is connecting to jira, only the case is considered when the webhook could fire twice (see description in Jira Webhook: Catch comments from other issue updates #9513), the content of the message must be checked as well. This will not cause a regression as the content is still a safe check.
• Check for note contents that reflect a comment made in DefectDojo, as well as a comment that would be coming from Jira
  • This additional check will prevent a loop of:
    1. comment left in dojo and pushed to jira with user prefix
    2. jira comment created and send webhook response
    3. dojo processes webhook responses, and creates comment on finding

[sc-10999]