Update test that import code fix doesn't use node_modules global import if classic resolution is set (#20453)

Author: Andy

src/harness/fourslash.ts

@@ -2522,9 +2522,9 @@ Actual: ${stringify(fullActual)}`);
         }
 
         public verifyImportFixAtPosition(expectedTextArray: string[], errorCode?: number) {
-            const ranges = this.getRanges();
-            if (ranges.length === 0) {
-                this.raiseError("At least one range should be specified in the testfile.");
+            const ranges = this.getRanges().filter(r => r.fileName === this.activeFile.fileName);
+            if (ranges.length !== 1) {
+                this.raiseError("Exactly one range should be specified in the testfile.");
             }
 
             const codeFixes = this.getCodeFixActions(this.activeFile.fileName, errorCode);

tests/cases/fourslash/importNameCodeFixNewImportIndex_notForClassicResolution.ts

@@ -12,16 +12,21 @@
 ////[|foo;|]
 
 // @Filename: /c.ts
-////bar;
+////[|bar;|]
 
 goTo.file("/a/index.ts");
 
 goTo.file("/b.ts");
+// Explicitly imports from "./a/index" and not just from "./a"
 verify.importFixAtPosition([
 `import { foo } from "./a/index";
 
 foo;`
 ]);
 
 goTo.file("/c.ts");
-// TODO: GH#20050 verify.not.codeFixAvailable();
+// Does not use a global import for node_modules
+verify.importFixAtPosition([
+`import { bar } from "./node_modules/x/index";
+
+bar;`]);