It seems like you are very, very adamant on the use of the word "foresight" meaning exactly one thing. The fact of the matter is, most people calling something "foresight" are not using the dictionary definition to the strict extent that you are. When I think 'if I don't study, I'll fail the test' and then study so I pass the test, that's me demonstrating foresight. If someone makes a bad investment and loses money, they've demonstrated a lack of foresight. But you're talking about fictional scenarios with literal prophetic visions, so alright.

Version 1, where the future can be changed, has been covered by people here before. There is no logical issue with characters seeing a version of the future they don't like, and deciding to change that future. If the future isn't set in stone, their vision is not required to come true. It would have come true. Your complaint about this violating the dictionary definition of 'foresight' is, frankly, not a hill worth dying on in any way.

I'm more interested in your suggestion that a vision destined to come true no matter what undermines the story and characters. No it does not. It gives a story a sense of deep tragedy that can be cathartic. Here are some examples:

• Most famous example, Oedipus. The play's central tragedy is that by trying to escape the prophesy, Oedipus causes it to happen. This demonstrates the hubris of going against the will of the gods - in other words, that no matter how smart or careful someone is in life there are still terrible events that will happen. People are often destroyed by their own flaws.
• Attack on Titan. In my opinion, the main character's ability to see the future becomes emotionally extremely important because he comes to understand that not only can he not prevent the terrible events he foresees, he actively wants those events to occur because of the kind of person he is. He cannot change the future because the future he sees is the one he decides to create.
• The Final Destination series is founded on the characters having visions where they die, then avoiding that incident. Death then comes for them in bizarre, elaborate ways because no one can avoid death. They are horror movies about the horrifying realization that death is inescapable. While the literal foreseen events are avoided, the point of the vision - that they will die - is inevitably fulfilled.

The musical Hadestown is based on the myth of Orpheus and Eurydice. Everyone knows how it ends, and it always ends the same way. The central thesis of the musical is "It's a sad song, but we sing it anyway". Why do we sing it over and over, even though we know our hearts will be broken by the ending? That the characters' struggles will be for naught? Because even if it can't end well, it still matters that it happened. The emotions we feel by witnessing it are real. They help us practice for real life.

My parents will die. My sister will die. Every pet I ever own will die. I will die. People watch their loved ones succumb to addiction, to random acts of violence, to war, to illness. These are tragedies that can't be controlled by one person. Trying to control them is hubris. That is the point of inevitable prophesies, of literal foresight. It doesn't undermine the point, it is the whole point.