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

.github/workflows/tests.yml

@@ -162,7 +162,7 @@ jobs:
           source .venv/bin/activate
           which pytest || echo "pytest not in PATH"
           echo "Start to run unit test"
-          python3 run_tests.py
+          python3 run_tests.py -i
 
       - name: Prepare function test environment
         working-directory: docker