Hide "Edit security attributes" unless FF enabled

What does this MR do and why?

Only show the Edit security attributes item in the actions dropdown in the security inventory when the security_context_labels feature flag is enabled.

References

Screenshots or screen recordings

Before	After
Edit security attributes is shown for projects even when security_context_labels is disabled	Edit security attributes is shown for projects only when security_context_labels is enabled

How to set up and validate locally

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