branch-2.1: [fix](multi-catalog) Fix bug: "Can not create a Path from an empty string" (#49382) (#49641)

### What problem does this PR solve?
Problem Summary:
In HiveMetaStoreCache, the function FileInputFormat.setInputPaths is
used to set input paths. However, this function splits paths using
commas, which is not the expected behavior. As a result, when partition
values contain commas, it leads to incorrect path parsing and potential
errors.
```java
  public static void setInputPaths(JobConf conf, String org.apache.hadoop.shaded.com.aSeparatedPaths) {
    setInputPaths(conf, StringUtils.stringToPath(
                        getPathStrings(org.apache.hadoop.shaded.com.aSeparatedPaths)));
  }
```
To prevent FileInputFormat.setInputPaths from splitting paths by commas,
we use another overloaded version of the method. Instead of passing a
comma-separated string, we explicitly pass a Path object, ensuring that
partition values containing commas are handled correctly.
```java
  public static void setInputPaths(JobConf conf, Path... inputPaths) {
    Path path = new Path(conf.getWorkingDirectory(), inputPaths[0]);
    StringBuffer str = new StringBuffer(StringUtils.escapeString(path.toString()));
    for(int i = 1; i < inputPaths.length;i++) {
      str.append(StringUtils.COMMA_STR);
      path = new Path(conf.getWorkingDirectory(), inputPaths[i]);
      str.append(StringUtils.escapeString(path.toString()));
    }
    conf.set(org.apache.hadoop.shaded.org.apache.hadoop.mapreduce.lib.input.
      FileInputFormat.INPUT_DIR, str.toString());
  }
```

### Release note

None

fe/fe-core/src/main/java/org/apache/doris/datasource/hive/HiveMetaStoreCache.java

@@ -404,7 +404,8 @@ public class HiveMetaStoreCache {
             } catch (Exception e) {
                 LOG.warn("unknown scheme in path: " + finalLocation, e);
             }
-            FileInputFormat.setInputPaths(jobConf, finalLocation.get());
+            // NOTICE: the setInputPaths has 2 overloads, the 2nd arg should be Path not String
+            FileInputFormat.setInputPaths(jobConf, finalLocation.getPath());
             try {
                 FileCacheValue result = getFileCache(finalLocation.get(), key.inputFormat, jobConf,
                         key.getPartitionValues(), key.bindBrokerName);