Fix langchain4j/langchain4j#2429 (#107)

## Issue
Fixes langchain4j/langchain4j#2429

## Change
Keep original method that contains original method parameter names

## General checklist
- [X] There are no breaking changes
- [ ] I have added unit and/or integration tests for my change
- [ ] The tests cover both positive and negative cases
- [X] I have manually run all the unit and integration tests in the
module I have added/changed, and they are all green
- [ ] I have added/updated the
[documentation](https://github.com/langchain4j/langchain4j/tree/main/docs/docs)
- [ ] I have added an example in the [examples
repo](https://github.com/langchain4j/langchain4j-examples) (only for
"big" features)

Author: dliubarskyi

Diff for: langchain4j-spring-boot-starter/src/main/java/dev/langchain4j/service/spring/AiServiceFactory.java

@@ -144,12 +144,14 @@ private Map<ToolSpecification, ToolExecutor> aopEnhancedTools(Object enhancedToo
         for (Method originalToolMethod : originalToolClass.getDeclaredMethods()) {
             if (originalToolMethod.isAnnotationPresent(Tool.class)) {
                 Arrays.stream(enhancedTool.getClass().getDeclaredMethods())
-                      .filter(m -> m.getName().equals(originalToolMethod.getName()))
-                      .findFirst()
-                      .ifPresent(enhancedMethod -> {
-                          ToolSpecification toolSpecification = toolSpecificationFrom(originalToolMethod);
-                          toolExecutors.put(toolSpecification, new DefaultToolExecutor(enhancedTool, enhancedMethod));
-                      });
+                        // TODO match by complete method signature, not only by name (there can be multiple methods with the same name)
+                        .filter(m -> m.getName().equals(originalToolMethod.getName()))
+                        .findFirst()
+                        .ifPresent(enhancedToolMethod -> {
+                            ToolSpecification toolSpecification = toolSpecificationFrom(originalToolMethod);
+                            ToolExecutor executor = new DefaultToolExecutor(enhancedTool, originalToolMethod, enhancedToolMethod);
+                            toolExecutors.put(toolSpecification, executor);
+                        });
             }
         }
         return toolExecutors;