[SPARK-54127][BUILD] Fix sbt inconsistent shading package

### What changes were proposed in this pull request?

Fix sbt inconsistent shading package for `spark-connect` module

### Why are the changes needed?

Take 4.1.0-preview3 as the example, which is built by Maven.
```
$ jar tf jars/spark-connect_2.13-4.1.0-preview3.jar | grep 'connect/grpc' | head
org/sparkproject/connect/grpc/
org/sparkproject/connect/grpc/inprocess/
org/sparkproject/connect/grpc/inprocess/InProcessTransport$InProcessStream$InProcessServerStream.class
org/sparkproject/connect/grpc/inprocess/InProcessTransport$2.class
org/sparkproject/connect/grpc/inprocess/InProcessTransport$InProcessStream$InProcessClientStream.class
org/sparkproject/connect/grpc/inprocess/InProcessTransport$SingleMessageProducer.class
org/sparkproject/connect/grpc/inprocess/InProcessTransport$6.class
org/sparkproject/connect/grpc/inprocess/InProcessTransport$1.class
org/sparkproject/connect/grpc/inprocess/InProcessSocketAddress.class
org/sparkproject/connect/grpc/inprocess/InProcessTransport$InProcessStream.class
```

the produced jar built by SBT has a different relocated package for grpc classes
```
$ jar tf jars/spark-connect_2.13-4.1.0-SNAPSHOT.jar | grep 'connect/grpc' | head
org/sparkproject/connect/grpc/
org/sparkproject/connect/grpc/io/
org/sparkproject/connect/grpc/io/grpc/
org/sparkproject/connect/grpc/io/grpc/Attributes$1.class
org/sparkproject/connect/grpc/io/grpc/Attributes$Builder.class
org/sparkproject/connect/grpc/io/grpc/Attributes$Key.class
org/sparkproject/connect/grpc/io/grpc/Attributes.class
org/sparkproject/connect/grpc/io/grpc/BinaryLog.class
org/sparkproject/connect/grpc/io/grpc/BindableService.class
org/sparkproject/connect/grpc/io/grpc/CallCredentials$MetadataApplier.class
```

### Does this PR introduce _any_ user-facing change?

No, so far I don't see such inconsistent causes real issue.

### How was this patch tested?

Verified the output of `dev/make-distribution.sh --sbt-enabled`

```
jar tf jars/spark-connect_2.13-4.1.0-SNAPSHOT.jar | grep 'connect/grpc' | head
org/sparkproject/connect/grpc/
org/sparkproject/connect/grpc/Attributes$1.class
org/sparkproject/connect/grpc/Attributes$Builder.class
org/sparkproject/connect/grpc/Attributes$Key.class
org/sparkproject/connect/grpc/Attributes.class
org/sparkproject/connect/grpc/BinaryLog.class
org/sparkproject/connect/grpc/BindableService.class
org/sparkproject/connect/grpc/CallCredentials$MetadataApplier.class
org/sparkproject/connect/grpc/CallCredentials$RequestInfo.class
org/sparkproject/connect/grpc/CallCredentials.class
```

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #52825 from pan3793/SPARK-54127.

Authored-by: Cheng Pan <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>
(cherry picked from commit 3d92bdf)
Signed-off-by: Dongjoon Hyun <[email protected]>

Author: pan3793

project/SparkBuild.scala

@@ -808,7 +808,7 @@ object SparkConnect {
     },
 
     (assembly / assemblyShadeRules) := Seq(
-      ShadeRule.rename("io.grpc.**" -> "org.sparkproject.connect.grpc.@0").inAll,
+      ShadeRule.rename("io.grpc.**" -> "org.sparkproject.connect.grpc.@1").inAll,
       ShadeRule.rename("com.google.common.**" -> "org.sparkproject.connect.guava.@1").inAll,
       ShadeRule.rename("com.google.thirdparty.**" -> "org.sparkproject.connect.guava.@1").inAll,
       ShadeRule.rename("com.google.protobuf.**" -> "org.sparkproject.connect.protobuf.@1").inAll,