Fix: #6098 - Add validation logic for parser_config when update document (#13911)

### What problem does this PR solve?

Add validation logic for parser_config.
Refactor the processing flow. Before change, validation logics and
update logics are mixed up - some validation logis executes followed by
some update logic executes and then another such
"validation-and-then-update" which is not good. After change, all
validation logic executes firstly. Update logic will be executed after
ALL validation logic executed.
Validation logic for parameters (that come from front end) will be
checked using Pydantic. For validation logic that depends on data from
DB, they will be in separate methods.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] Refactoring

run_tests.py

@@ -41,6 +41,7 @@ class TestRunner:
         self.coverage = False
         self.parallel = False
         self.verbose = False
+        self.ignore_syntax_warning = False
         self.markers = ""
 
         # Python interpreter path
@@ -67,6 +68,7 @@ OPTIONS:
     -h, --help              Show this help message
     -c, --coverage          Run tests with coverage report
     -p, --parallel          Run tests in parallel (requires pytest-xdist)
+    -i, --ignore            Run tests with "-W ignore::SyntaxWarning" option
     -v, --verbose           Verbose output
     -t, --test FILE         Run specific test file or directory
     -m, --markers MARKERS   Run tests with specific markers (e.g., "unit", "integration")
@@ -80,6 +82,9 @@ EXAMPLES:
 
     # Run in parallel
     python run_tests.py --parallel
+    
+    # Run tests with "-W ignore::SyntaxWarning" option
+    python run_tests.py --ignore
 
     # Run specific test file
     python run_tests.py --test services/test_dialog_service.py
@@ -130,6 +135,10 @@ EXAMPLES:
                 # Fallback to auto if multiprocessing not available
                 cmd.extend(["-n", "auto"])
 
+        # Add ignore syntax warning
+        if self.ignore_syntax_warning:
+            cmd.extend(["-W", "ignore::SyntaxWarning"])
+
         # Add default options from pyproject.toml if it exists
         pyproject_path = self.project_root / "pyproject.toml"
         if pyproject_path.exists():
@@ -200,6 +209,7 @@ Examples:
   python run_tests.py --parallel         # Run in parallel
   python run_tests.py --test services/test_dialog_service.py  # Run specific test
   python run_tests.py --markers "unit"   # Run only unit tests
+  python run_tests.py --ignore           # Run with "-W ignore::SyntaxWarning" option
 """
         )
 
@@ -215,6 +225,12 @@ Examples:
             help="Run tests in parallel (requires pytest-xdist)"
         )
 
+        parser.add_argument(
+            "-i", "--ignore",
+            action="store_true",
+            help="Run tests with '-W ignore::SyntaxWarning' "
+        )
+
         parser.add_argument(
             "-v", "--verbose",
             action="store_true",
@@ -243,6 +259,7 @@ Examples:
             self.parallel = args.parallel
             self.verbose = args.verbose
             self.markers = args.markers
+            self.ignore_syntax_warning = args.ignore
 
             return True