[test](mtmv) Fix mv regression test fail occasionally and add some log (

#47103)

### What problem does this PR solve?

1. Optimize the test validation logic to check whether the materialized
view is built based on the materialized view name.
2. Wait for the synchronization of the materialized view to be
completed, using the new method.

fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java

@@ -1070,7 +1070,7 @@ public enum IgnoreSplitType {
     public int maxScanKeyNum = 48;
     @VariableMgr.VarAttr(name = MAX_PUSHDOWN_CONDITIONS_PER_COLUMN)
     public int maxPushdownConditionsPerColumn = 1024;
-    @VariableMgr.VarAttr(name = SHOW_HIDDEN_COLUMNS, flag = VariableMgr.SESSION_ONLY)
+    @VariableMgr.VarAttr(name = SHOW_HIDDEN_COLUMNS, flag = VariableMgr.SESSION_ONLY, needForward = true)
     public boolean showHiddenColumns = false;
 
     @VariableMgr.VarAttr(name = ALLOW_PARTITION_COLUMN_NULLABLE, description = {
@@ -1535,25 +1535,25 @@ public void setEnableLeftZigZag(boolean enableLeftZigZag) {
     /**
      * For debug purpose, don't merge unique key and agg key when reading data.
      */
-    @VariableMgr.VarAttr(name = SKIP_STORAGE_ENGINE_MERGE)
+    @VariableMgr.VarAttr(name = SKIP_STORAGE_ENGINE_MERGE, needForward = true)
     public boolean skipStorageEngineMerge = false;
 
     /**
      * For debug purpose, skip delete predicate when reading data.
      */
-    @VariableMgr.VarAttr(name = SKIP_DELETE_PREDICATE)
+    @VariableMgr.VarAttr(name = SKIP_DELETE_PREDICATE, needForward = true)
     public boolean skipDeletePredicate = false;
 
     /**
      * For debug purpose, skip delete sign when reading data.
      */
-    @VariableMgr.VarAttr(name = SKIP_DELETE_SIGN)
+    @VariableMgr.VarAttr(name = SKIP_DELETE_SIGN, needForward = true)
     public boolean skipDeleteSign = false;
 
     /**
      * For debug purpose, skip delete bitmap when reading data.
      */
-    @VariableMgr.VarAttr(name = SKIP_DELETE_BITMAP)
+    @VariableMgr.VarAttr(name = SKIP_DELETE_BITMAP, needForward = true)
     public boolean skipDeleteBitmap = false;
 
     // This variable replace the original FE config `recover_with_skip_missing_version`.