fix: add context to single-entry frc

Signed-off-by: Todd Baert <todd.baert@dynatrace.com>

Author: toddbaert

gherkin/targeting.feature

@@ -93,6 +93,7 @@ Feature: Targeting rules
   @fractional @fractional-v2
   Scenario: Fractional operator with single entry always resolves to the only variant
     Given a String-flag with key "fractional-single-entry-flag" and a default value "fallback"
+    And a context containing a targeting key with value "some-targeting-key"
     When the flag was evaluated with details
     Then the resolved details value should be "single"