Unset is_cc for default cluster replica sizes

Author: def-

src/catalog/src/config.rs

@@ -156,7 +156,7 @@ impl Default for ClusterReplicaSizeMap {
                             workers: workers.into(),
                             credits_per_hour: 1.into(),
                             cpu_exclusive: false,
-                            is_cc: true,
+                            is_cc: false,
                             disabled: false,
                             selectors: BTreeMap::default(),
                         },
@@ -177,7 +177,7 @@ impl Default for ClusterReplicaSizeMap {
                     workers: 1,
                     credits_per_hour: scale.into(),
                     cpu_exclusive: false,
-                    is_cc: true,
+                    is_cc: false,
                     disabled: false,
                     selectors: BTreeMap::default(),
                 },
@@ -193,7 +193,7 @@ impl Default for ClusterReplicaSizeMap {
                     workers: scale.into(),
                     credits_per_hour: scale.into(),
                     cpu_exclusive: false,
-                    is_cc: true,
+                    is_cc: false,
                     disabled: false,
                     selectors: BTreeMap::default(),
                 },
@@ -209,7 +209,7 @@ impl Default for ClusterReplicaSizeMap {
                     workers: 8,
                     credits_per_hour: 1.into(),
                     cpu_exclusive: false,
-                    is_cc: true,
+                    is_cc: false,
                     disabled: false,
                     selectors: BTreeMap::default(),
                 },
@@ -226,7 +226,7 @@ impl Default for ClusterReplicaSizeMap {
                 workers: 4,
                 credits_per_hour: 2.into(),
                 cpu_exclusive: false,
-                is_cc: true,
+                is_cc: false,
                 disabled: false,
                 selectors: BTreeMap::default(),
             },