Fix empty files when saving code snippets from chat (#8180)

As the title says. Fixes
https://linear.app/sourcegraph/issue/QA-743/jb-specific-code-not-applied-to-new-file-after-clicking-save-button-in

## Test plan
1. Open Cody chat in JetBrains IDE
2. Enter: "Write a Java program."
3. Wait for code snippet generation
4. Click the save button on the snippet
5. Name the file (e.g., "HelloWorld.java") and save

<!-- Required. See
https://docs-legacy.sourcegraph.com/dev/background-information/testing_principles.
-->

Author: mkondratek

jetbrains/src/main/kotlin/com/sourcegraph/cody/edit/EditService.kt

@@ -78,15 +78,15 @@ class EditService(val project: Project) {
                   uriString = op.uri,
                   content = op.textContents,
                   overwrite = op.options?.overwrite ?: false)
-          return file != null
+          file != null
         }
         is RenameFileOperation -> {
           logger.warn("Workspace edit operation renamed a file: ${op.oldUri} -> ${op.newUri}")
-          return false
+          false
         }
         is DeleteFileOperation -> {
           logger.warn("Workspace edit operation deleted a file: ${op.uri}")
-          return false
+          false
         }
         is EditFileOperation -> {
           logger.info("Applying workspace edit to a file: ${op.uri}")