add user select to additional data (microsoft#226637)

Author: justschen

src/vs/workbench/contrib/issue/browser/issueReporterPage.ts

@@ -94,7 +94,7 @@ export default (): string => `
 				<span id="ext-loading" hidden></span>
 				<span class="ext-parens" hidden>(</span><a href="#" class="showInfo" id="extension-id">${escape(localize('show', "show"))}</a><span class="ext-parens" hidden>)</span>
 			</label>
-			<pre class="block-info" id="extension-data" placeholder="${escape(localize('extensionData', "Extension does not have additional data to include."))}" style="white-space: pre-wrap;">
+			<pre class="block-info" id="extension-data" placeholder="${escape(localize('extensionData', "Extension does not have additional data to include."))}" style="white-space: pre-wrap; user-select: text;">
 				<!-- To be dynamically filled -->
 			</pre>
 		</div>