[AI-FSSDK] [FSSDK-12337] Update experiment type values to short-form abbreviations

Author: FarhanAnjum-opti

OptimizelySDK.Tests/ProjectConfigTest.cs

@@ -1496,7 +1496,7 @@ public void TestCmabFieldPopulation()
     public class FeatureRolloutProjectConfigTest
     {
         private string BuildFeatureRolloutDatafile(
-            string experimentType = "feature_rollout",
+            string experimentType = "fr",
             string rolloutId = "rollout_1",
             bool includeRollout = true,
             bool includeRolloutVariations = true)
@@ -1735,7 +1735,7 @@ public void TestTypeFieldParsedCorrectly()
                 new NoOpErrorHandler());
 
             var rolloutExperiment = config.GetExperimentFromKey("rollout_experiment");
-            Assert.AreEqual("feature_rollout", rolloutExperiment.Type);
+            Assert.AreEqual("fr", rolloutExperiment.Type);
         }
     }
 }

OptimizelySDK/Config/DatafileProjectConfig.cs

@@ -462,7 +462,7 @@ private void Initialize()
                     }
 
                     var experiment = _ExperimentIdMap[experimentId];
-                    if (experiment.Type != "feature_rollout")
+                    if (experiment.Type != "fr")
                     {
                         continue;
                     }