[CELEBORN-2166][FOLLOWUP] Update config celeborn.client.shuffleDataLostOnUnknownWorker.enabled version to 0.6.3

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

Update config celeborn.client.shuffleDataLostOnUnknownWorker.enabled version to 0.6.3

### Why are the changes needed?

Followup for #3496, it is better to merge into branch-0.6 as well.
### Does this PR resolve a correctness bug?

No.
### Does this PR introduce _any_ user-facing change?

No, it has not been releases yet.

### How was this patch tested?

GA.

Closes #3576 from turboFei/update_conf.

Authored-by: Wang, Fei <fwang12@ebay.com>
Signed-off-by: Wang, Fei <fwang12@ebay.com>

Author: turboFei

common/src/main/scala/org/apache/celeborn/common/CelebornConf.scala

@@ -6795,7 +6795,7 @@ object CelebornConf extends Logging {
   val CLIENT_SHUFFLE_DATA_LOST_ON_UNKNOWN_WORKER_ENABLED: ConfigEntry[Boolean] =
     buildConf("celeborn.client.shuffleDataLostOnUnknownWorker.enabled")
       .categories("client")
-      .version("0.7.0")
+      .version("0.6.3")
       .doc("Whether to mark shuffle data lost when unknown worker is detected.")
       .booleanConf
       .createWithDefault(false)

docs/configuration/client.md

@@ -121,7 +121,7 @@ license: |
 | celeborn.client.shuffle.rangeReadFilter.enabled | false | false | If a spark application have skewed partition, this value can set to true to improve performance. | 0.2.0 | celeborn.shuffle.rangeReadFilter.enabled | 
 | celeborn.client.shuffle.register.filterExcludedWorker.enabled | false | false | Whether to filter excluded worker when register shuffle. | 0.4.0 |  | 
 | celeborn.client.shuffle.reviseLostShuffles.enabled | false | false | Whether to revise lost shuffles. | 0.6.0 |  | 
-| celeborn.client.shuffleDataLostOnUnknownWorker.enabled | false | false | Whether to mark shuffle data lost when unknown worker is detected. | 0.7.0 |  | 
+| celeborn.client.shuffleDataLostOnUnknownWorker.enabled | false | false | Whether to mark shuffle data lost when unknown worker is detected. | 0.6.3 |  | 
 | celeborn.client.slot.assign.maxWorkers | 10000 | false | Max workers that slots of one shuffle can be allocated on. Will choose the smaller positive one from Master side and Client side, see `celeborn.master.slot.assign.maxWorkers`. | 0.3.1 |  | 
 | celeborn.client.spark.fetch.cleanFailedShuffle | false | false | whether to clean those disk space occupied by shuffles which cannot be fetched | 0.6.0 |  | 
 | celeborn.client.spark.fetch.cleanFailedShuffleInterval | 1s | false | the interval to clean the failed-to-fetch shuffle files, only valid when celeborn.client.spark.fetch.cleanFailedShuffle is enabled | 0.6.0 |  |