fix(tests): Make first basic block test agree with test plan

The test plan specified to use a block from the Basic Blocks
category of the test blocks.

PR google#7324 changed the test in a way that violated the plan,
albeit in aid of a good cause: the basic blocks category had
become unusable due to a bug in the test blocks combined with
better error checking (in PR google#7289).

Since the test blocks were fixed by google/blockly-samples#1774
(and the fix published and Blockly updated by PR google#7313) this
violation can be corrected.

tests/browser/test/basic_block_test.js

@@ -14,7 +14,7 @@ const {
   testSetup,
   testFileLocations,
   getAllBlocks,
-  dragNthBlockFromFlyout,
+  dragBlockTypeFromFlyout,
 } = require('./test_setup');
 const {Key} = require('webdriverio');
 
@@ -32,7 +32,13 @@ suite('Basic block tests', function (done) {
 
   test('Drag three blocks into the workspace', async function () {
     for (let i = 1; i <= 3; i++) {
-      await dragNthBlockFromFlyout(this.browser, 'Align', 0, 250, 50 * i);
+      await dragBlockTypeFromFlyout(
+        this.browser,
+        'Basic',
+        'test_basic_empty',
+        250,
+        50 * i
+      );
       chai.assert.equal((await getAllBlocks(this.browser)).length, i);
     }
   });