Trying to sign in to an online Microsoft site, after setting the correct credentials, fails, with unsupported old browser message.

The attached test reproduces the issue.
Steps:
- Have a valid Microsoft account.
- Run the attached test, accept cookies, and press Sign In.
- Type your email address (see "Screen1.png"), press Next.
- Enter your password (see "Screen2.png"), press Next
- Select Yes to stay signed in, but it doesn't really matter, (see "Screen3.png")
- You will be prompted with a dialog saying that the password is wrong (even if it is correct), so type it again (see "Screen5.png")
- Finally you get a not a supported browser message (see "Screen6.png")

Note, the test contains other Microsoft sites that fail in similar ways, and also a Google site that works.

This issue can be reproduced with any recent JavaFX version (17, 21, 24, head).