[HUDI-1740] Fix insert-overwrite API archival (#2784)

- fix problem of archiving replace commits
- Fix problem when getting empty replacecommit.requested
- Improved the logic of handling empty and non-empty requested/inflight commit files. Added unit tests to cover both empty and non-empty inflight files cases and cleaned up some unused test util methods

Co-authored-by: yorkzero831 <yorkzero8312@gmail.com>
Co-authored-by: zheren.yu <zheren.yu@paypay-corp.co.jp>

hudi-common/src/main/avro/HoodieArchivedMetaEntry.avsc

@@ -112,6 +112,14 @@
             "HoodieRequestedReplaceMetadata"
          ],
          "default": null
+      },
+      {
+         "name":"HoodieInflightReplaceMetadata",
+         "type":[
+            "null",
+            "HoodieCommitMetadata"
+         ],
+         "default": null
       }
    ]
 }