Code Enhancement: Merge patch calls in PAC controller

[sm43]

In controller after creating pipelineruns we do 2 patch calls

• https://github.com/openshift-pipelines/pipelines-as-code/blob/15d27261cb6419b96a49a32d5a9666077618c086/pkg/pipelineascode/pipelineascode.go#L174 the first one is for patching logURL annotation
• https://github.com/openshift-pipelines/pipelines-as-code/blob/15d27261cb6419b96a49a32d5a9666077618c086/pkg/pipelineascode/pipelineascode.go#L92 the second one happens for patching order execution annotation when concurency is enabled.

This 2 patch calls can be clubbed together

Make sure the logic is not changing

• 2nd call happens only when concurrency is enabled
• 1st happens for all events except from GitHub App