[KYUUBI apache#6182] JDBC engine using the overlay conf as session conf

# 🔍 Description
## Issue References 🔗

## Describe Your Solution 🔧

Like apache#6147, JDBC engine should overwriting the engine conf with the passed conf consider as the full session conf.

## Types of changes 🔖

- [x] Bugfix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)

## Test Plan 🧪

#### Behavior Without This Pull Request ⚰️

#### Behavior With This Pull Request 🎉

#### Related Unit Tests

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# Checklist 📝

- [ ] This patch was not authored or co-authored using [Generative Tooling](https://www.apache.org/legal/generative-tooling.html)

**Be nice. Be informative.**

Closes apache#6182 from lsm1/branch-jdbc-engine-use-overlay-conf.

Closes apache#6182

9ca8b48 [senmiaoliu] Using the overlay conf as session conf

Authored-by: senmiaoliu <[email protected]>
Signed-off-by: Cheng Pan <[email protected]>

externals/kyuubi-jdbc-engine/src/main/scala/org/apache/kyuubi/engine/jdbc/session/JdbcSessionImpl.scala

@@ -53,6 +53,7 @@ class JdbcSessionImpl(
       kyuubiConf.set(ENGINE_JDBC_CONNECTION_USER, user)
       kyuubiConf.set(ENGINE_JDBC_CONNECTION_PASSWORD, password)
     }
+    conf.foreach { case (k, v) => kyuubiConf.set(k, v) }
     kyuubiConf
   }