Change thread name from low to high cardinality

With virtual threads there will be millions of thread names so this must be a high cardinality key

Signed-off-by: cfredri4 <[email protected]>

src/main/java/io/r2dbc/proxy/observation/R2dbcObservationDocumentation.java

@@ -89,16 +89,6 @@ enum LowCardinalityKeys implements KeyName {
             public String asString() {
                 return "r2dbc.connection";
             }
-        },
-
-        /**
-         * Name of the R2DBC thread.
-         */
-        THREAD {
-            @Override
-            public String asString() {
-                return "r2dbc.thread";
-            }
         }
 
     }
@@ -123,6 +113,16 @@ public String asString() {
             public String asString() {
                 return "r2dbc.params[%s]";
             }
+        },
+
+        /**
+         * Name of the R2DBC thread.
+         */
+        THREAD {
+            @Override
+            public String asString() {
+                return "r2dbc.thread";
+            }
         }
 
     }