fix: Save the workspace before exporting jar (#483)

Author: jdneo

src/exportJarSteps/ExportJarTaskProvider.ts

@@ -35,6 +35,9 @@ interface IExportJarTaskDefinition extends TaskDefinition {
 let isExportingJar: boolean = false;
 
 export async function executeExportJarTask(node?: INodeData): Promise<void> {
+    // save the workspace first
+    await workspace.saveAll(false /*includeUntitled*/);
+
     if (!await languageServerApiManager.isStandardServerReady() || isExportingJar || await buildWorkspace() === false) {
         return;
     }