Don't normalize whitespace in fourslash tests (#18447)

* Don't normalize whitespace in fourslash tests

* Only render whitespace when the diff is text-only

src/server/client.ts

@@ -573,7 +573,7 @@ namespace ts.server {
 
         getEditsForRefactor(
             fileName: string,
-            _formatOptions: FormatCodeSettings,
+            formatOptions: FormatCodeSettings,
             positionOrRange: number | TextRange,
             refactorName: string,
             actionName: string): RefactorEditInfo {
@@ -581,6 +581,7 @@ namespace ts.server {
             const args = this.createFileLocationOrRangeRequestArgs(positionOrRange, fileName) as protocol.GetEditsForRefactorRequestArgs;
             args.refactor = refactorName;
             args.action = actionName;
+            args.formatOptions = formatOptions;
 
             const request = this.processRequest<protocol.GetEditsForRefactorRequest>(CommandNames.GetEditsForRefactor, args);
             const response = this.processResponse<protocol.GetEditsForRefactorResponse>(request);

src/server/protocol.ts

@@ -494,6 +494,7 @@ namespace ts.server.protocol {
         refactor: string;
         /* The 'name' property from the refactoring action */
         action: string;
+        formatOptions: FormatCodeSettings,
     };
 
 

src/server/session.ts

@@ -1488,7 +1488,7 @@ namespace ts.server {
 
             const result = project.getLanguageService().getEditsForRefactor(
                 file,
-                this.projectService.getFormatCodeOptions(),
+                convertFormatOptions(args.formatOptions),
                 position || textRange,
                 args.refactor,
                 args.action