Merge RootCmdOptions.RootContext and Context into a single field

[Suhail98]

Follow-up from #6832, as suggested in review.

RootCmdOptions carries two contexts:

RootContext context.Context `mapstructure:"-"`
Context     context.Context `mapstructure:"-"`

They used to be different: Context was a cancellable child of RootContext, so kamel run --sync could cancel the in-flight command and rerun it when a file changed, while RootContext kept the process alive. #6832 removed --sync and --dev, and with them the only caller of that cancel func, so it also dropped the child context. NewKamelCommand now sets both fields to the same ctx.

Proposal:

• drop RootContext and keep Context
• its only reader is the <-o.RootContext.Done() wait point after --logs in pkg/cmd/run.go, which becomes <-o.Context.Done() with no change in behaviour

I'm happy to pick this up.

[squakez]

Thanks for creating the issue and propose for the work @Suhail98