Please make the Windows taskbar stop blinking after each macro-step, and file...

### Problem to be solved

EXAMPLE: Let's say that I use the Macro Manager to run a macro with 6 steps, on 10 files.
I figure that it's going to take some time, so I start it, and then switch to other applications to do other work.
But EVERY time it finishes just one STEP of each macro (not the whole macro itself), it flashes the Audacity icon in the Windows (10) taskbar.
My taskbar is normally hidden, and many rows high. so that pops up, blocking a chunk of my screen. EVERY, SINGLE, MACRO, STEP.
I don't want it to flash at all.

### Your idea

**How do I disable this taskbar flashing feature completely?**

OR at MOST, it could flash when ALL the FILES are done (not just each step, and not just each file, but the entire batch) and it returns back to the Macro Manager, letting me know that I could actually run another batch. There's no other reason to even pay attention to Audacity until it's all done. Not like I can use it for anything while it's processing anyway.)

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Yes, I'm aware of related threads, but one is archived, and the other is not exactly on this particular point until the last comment.

https://forum.audacityteam.org/t/audacity-3-3-1-and-3-3-2-pop-up-over-other-windows/75151

https://github.com/audacity/audacity/issues/4635#issuecomment-1695431189

### Prior art

_No response_

### Additional context

_No response_

The issue identifies the Macro Manager and Windows taskbar flashing, but names no files, tests, or implementation entry points. Start by locating the Macro Manager's per-step completion handling and the related Windows taskbar notification behavior. Done means the taskbar does not flash after each macro step, with any remaining notification occurring only at the requested batch-completion point.

Written by the indexing model from the issue text.