test(bigtable): quote only the schema bundle ID in ExecuteQueryIT (googleapis#13540)

Modify the allTypes test in ExecuteQueryIT to only quote the schema
bundle ID instead of the whole message in the CAST expression.

Fixes: b/526667198

Author: hopha95

java-bigtable/google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/it/ExecuteQueryIT.java

@@ -211,10 +211,10 @@ public void allTypes() throws Exception {
                     + " as mapCol, "
                     + " CAST(b'\022\005Lover' AS `"
                     + schemaBundleId
-                    + ".com.google.cloud.bigtable.data.v2.test.Album`) as protoCol, CAST('JAZZ' AS"
+                    + "`.com.google.cloud.bigtable.data.v2.test.Album) as protoCol, CAST('JAZZ' AS"
                     + " `"
                     + schemaBundleId
-                    + ".com.google.cloud.bigtable.data.v2.test.Genre`) as enumCol FROM `"
+                    + "`.com.google.cloud.bigtable.data.v2.test.Genre) as enumCol FROM `"
                     + tableId
                     + "` WHERE _key='"
                     + uniquePrefix