Apply nightly rustfmt to canvas.rs and types.rs

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: jmoseley

rust/src/canvas.rs

@@ -451,9 +451,10 @@ pub async fn dispatch_canvas_invoke(
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use serde_json::json;
 
+    use super::*;
+
     #[test]
     fn declaration_serializes_camel_case_and_skips_none() {
         let decl = CanvasDeclaration {

rust/src/types.rs

@@ -3383,11 +3383,11 @@ mod tests {
 
     use super::{
         Attachment, AttachmentLineRange, AttachmentSelectionPosition, AttachmentSelectionRange,
-        ConnectionState, CustomAgentConfig, DeliveryMode,
-        GitHubReferenceType, InfiniteSessionConfig, PermissionRequestData,
-        ProviderConfig, ResumeSessionConfig, SessionConfig, SessionEvent, SessionId,
-        SystemMessageConfig, Tool, ToolBinaryResult, ToolInvocation, ToolResult,
-        ToolResultExpanded, ToolResultResponse, ensure_attachment_display_names,
+        ConnectionState, CustomAgentConfig, DeliveryMode, GitHubReferenceType,
+        InfiniteSessionConfig, PermissionRequestData, ProviderConfig, ResumeSessionConfig,
+        SessionConfig, SessionEvent, SessionId, SystemMessageConfig, Tool, ToolBinaryResult,
+        ToolInvocation, ToolResult, ToolResultExpanded, ToolResultResponse,
+        ensure_attachment_display_names,
     };
     use crate::generated::session_events::TypedSessionEvent;