[MU4 Issue] Bug with Horizontal Frame

[alexnoclain]

Describe the bug
Problems with the behavior of horizontal frames.

• When the handle is pulled outside the page the system follows it and ends up outside the page. (issue already present with Musescore 3.6.2)
• At the beginning of a system, when the frame is stretched, the names of the instruments remain in their original place.
• When a horizontal frame is placed at the end of the system and is stretched, it ends up in the next system. The 2nd system is found without staves but with the names of instruments and the brace.
• It is possible to move the frame freely in the system.
• Sometimes deleting the frame causes a crash of the app.

To Reproduce
Steps to reproduce the behavior:

• Create a new file with 2 instruments
• Add a horizontal frame at the beginning and at the end of the system
• Add a system jump on the horizontal frame of the end of the system.
• Expand the frame in one direction and in the other
• See the video for details

Expected behavior

• Frames should not move freely
• Instrument names should stay next to the system.
• a large stretch should not cause a system jump.

Screenshots

horizontal.frames.issues.mov

Platform information
OS: macOS 12.6, Arch.: x86_64, MuseScore version (64-bit): 4.0.1-230121751,
revision: github-musescore-musescore-9b70a8c

[Jojo-Schmitz]

Came up again in https://musescore.org/en/node/363439
I wonder whether it has the same root cause as #19759/#22256, in that it seems a frame gets treated like a measure