Add setExecutionTime implementation to AccessResult test stub

Fixed compilation error by implementing the setExecutionTime() abstract
method in the anonymous AccessResult subclass.

Error was:
  "<anonymous org.codelibs.fess.ingest.IngesterTest$1> is not abstract
   and does not override abstract method setExecutionTime(java.lang.Integer)
   in org.codelibs.fess.crawler.entity.AccessResult"

Solution:
- Added @OverRide method setExecutionTime(Integer)
- This adds to the complete set of required abstract methods for AccessResult:
  * setLastModified(Long)
  * getLastModified()
  * setContentLength(Long)
  * getContentLength()
  * setAccessResultData(AccessResultData<String>)
  * getAccessResultData()
  * setExecutionTime(Integer)

All methods are stubs sufficient for testing Ingester.process()
parameter acceptance.

Changes:
- Lines 128-131: Added setExecutionTime stub method

Author: claude

src/test/java/org/codelibs/fess/ingest/IngesterTest.java

@@ -124,6 +124,11 @@ public org.codelibs.fess.crawler.entity.AccessResultData<String> getAccessResult
                 // Stub implementation for testing
                 return null;
             }
+
+            @Override
+            public void setExecutionTime(Integer executionTime) {
+                // Stub implementation for testing
+            }
         };
 
         Map<String, Object> processed = ingester.process(target, accessResult);