Fix CTE materialization state isolation

[JackieTien97]

Summary

• move CTE materialization results from the reusable Query AST to an execution-local context
• share materialized data only among inner queries of the same top-level execution
• preserve one-time materialization for repeated references while allowing independent EXECUTE commands to materialize independently
• clear execution-local CTE state before a top-level retry

Tests

• mvn test-compile -pl iotdb-core/datanode -am -DskipTests
• mvn test -pl iotdb-core/datanode -am -Dtest=CteMaterializerStateTest -Dsurefire.failIfNoSpecifiedTests=false -DfailIfNoTests=false
• mvn test -pl iotdb-core/datanode -am -Dtest=CteMaterializerTest,CteSubqueryTest -Dsurefire.failIfNoSpecifiedTests=false -DfailIfNoTests=false
• mvn spotless:check -pl iotdb-core/datanode -am