feat: Initialize component inputs with default values

The code changes in `component.py` initialize component inputs with default values if they are not provided. This ensures that the inputs are always set, even if they are not explicitly passed. Additionally, the commit message follows the established convention of using a prefix to indicate the type of change.

src/backend/base/langflow/custom/custom_component/component.py

@@ -80,6 +80,11 @@ class Component(CustomComponent):
             if key in self.__dict__:
                 raise ValueError(f"Key {key} already exists in {self.__class__.__name__}")
             setattr(self, key, value)
+        for key, input_obj in self._inputs.items():
+            if not hasattr(self, key):
+                setattr(self, key, input_obj.value or None)
+            if key not in params:
+                params[key] = input_obj.value or None
         self._arguments = params
 
     def _set_outputs(self, outputs: List[dict]):