fix: frame command overlapping with subsequent NW commands.

[garg3133]

When the .frame() command is used with await (as shown below), the command promise resolves early before the command can even find the target frame element. Due to this, the subsequent Nightwatch commands start running parallelly with the .frame() command.

await browser.frame('frame_a_simple_iframe');
await browser.waitForElementVisible('.example');

This PR solves this issue by ensuring that the frame() command promise is only resolved once the command has completed its execution so that the subsequent commands only run after that.

[github-actions]

Status

• ❌ No modified files found in the types directory.
  Please make sure to include types for any changes you have made. Thank you!.