Change expected SLO with disabled feature flags

Why is this change being made?

For S1 and S2 the current language is

Within X days or before the feature flag is enabled, whichever comes first

and I think that should be changed simply to "Before the feature flag is enabled". My reasons are the following:

1. We caught the bug before the feature is made available so it should be fixed before the feature is enabled even if it's enabled before the end of the regular SLO (and the old wording already provided that)
2. If we stop working on the feature and it won't be enabled for months (years?) I think we should prioritize work on fixing security issues for features that are live even if the severity is lower

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