feat(conditional-router): rename 'matches regex' to 'regex' (#5410)

* feat(conditional-router): rename 'matches regex' to 'regex'

- Simplify the operator name in the ConditionalRouter component
- Update dropdown options for better UX
- Maintain existing functionality while using more concise naming

* [autofix.ci] apply automated fixes

---------

Co-authored-by: Gabriel Luiz Freitas Almeida <[email protected]>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

Author: 3 people

src/backend/base/langflow/components/logic/conditional_router.py

@@ -29,7 +29,7 @@ def __init__(self, *args, **kwargs):
         DropdownInput(
             name="operator",
             display_name="Operator",
-            options=["equals", "not equals", "contains", "starts with", "ends with", "matches regex"],
+            options=["equals", "not equals", "contains", "starts with", "ends with", "regex"],
             info="The operator to apply for comparing the texts.",
             value="equals",
             real_time_refresh=True,
@@ -72,7 +72,7 @@ def _pre_run_setup(self):
         self.__iteration_updated = False
 
     def evaluate_condition(self, input_text: str, match_text: str, operator: str, *, case_sensitive: bool) -> bool:
-        if not case_sensitive and operator != "matches regex":
+        if not case_sensitive and operator != "regex":
             input_text = input_text.lower()
             match_text = match_text.lower()
 
@@ -86,7 +86,7 @@ def evaluate_condition(self, input_text: str, match_text: str, operator: str, *,
             return input_text.startswith(match_text)
         if operator == "ends with":
             return input_text.endswith(match_text)
-        if operator == "matches regex":
+        if operator == "regex":
             try:
                 return bool(re.match(match_text, input_text))
             except re.error:
@@ -125,8 +125,9 @@ def false_response(self) -> Message:
 
     def update_build_config(self, build_config: dict, field_value: str, field_name: str | None = None) -> dict:
         if field_name == "operator":
-            if field_value == "matches regex":
+            if field_value == "regex":
                 build_config.pop("case_sensitive", None)
+
             # Ensure case_sensitive is present for all other operators
             elif "case_sensitive" not in build_config:
                 case_sensitive_input = next(