fix(47853): Convert to template string issue (microsoft#47976)

Author: Zzzen

src/services/refactors/convertStringOrTemplateLiteral.ts

@@ -215,7 +215,7 @@ namespace ts.refactor.convertStringOrTemplateLiteral {
                     const isLastSpan = index === currentNode.templateSpans.length - 1;
                     const text = span.literal.text + (isLastSpan ? subsequentText : "");
                     const rawText = getRawTextOfTemplate(span.literal) + (isLastSpan ? rawSubsequentText : "");
-                    return factory.createTemplateSpan(span.expression, isLast
+                    return factory.createTemplateSpan(span.expression, isLast && isLastSpan
                         ? factory.createTemplateTail(text, rawText)
                         : factory.createTemplateMiddle(text, rawText));
                 });

tests/cases/fourslash/refactorConvertStringOrTemplateLiteral_TemplateString13.ts

@@ -0,0 +1,11 @@
+/// <reference path='fourslash.ts' />
+
+////fetch(/*start*/process.env.API_URL + `/foo/bar?id=${id}&token=${token}`/*end*/);
+
+goTo.select("start", "end");
+edit.applyRefactor({
+    refactorName: "Convert to template string",
+    actionName: "Convert to template string",
+    actionDescription: ts.Diagnostics.Convert_to_template_string.message,
+    newContent: "fetch(`${process.env.API_URL}/foo/bar?id=${id}&token=${token}`);",
+});