[Feature]: Add 'step backward' button in Playwright Code Gen

[ScarletMcLearn]

🚀 Feature Request

Add a step backward button.
It should be able to be clicked when paused or debugger running - like the step forward button.
It should allow to step backward and run from that point in the code.

Example

While debugging, without having to run long complex tests from scratch just to debug the last screen, we can step back in the code, and also manually change state in the Browser (so that the code where stepped back to runs), then run from step back point.
It will save time.

Motivation

While debugging, without having to run long complex tests from scratch just to debug the last screen, we can step back in the code, and also manually change state in the Browser (so that the code where stepped back to runs), then run from step back point.
It will save time.