Default sequences replaced when comparing media from FPTR (Take 2)

[pbergeron-adsk]

DO NOT MERGE YET - THIS WORK FROM BEN IS INCOMPLETE

This is a cleanup PR: I took over Ben Chamberland's PR 545.

The text below was his github PR comments, verbatim. This work may be incomplete, needs to be tested, reviewed.

Summarize your change.

This When a user opens media from Flow Production Tracking, and then compares it to another piece of media in Flow Production Tracking, the default sequences are overwritten. Meaning, the user can no longer access the clips that they initially opened from FPTR. This can interrupt workflows.

If this change is implemented, along with another PR into OpenRV, users will have the option to enable a parameter in Flow Production Tracking / Session Prefs that will prevent this from happening.

This PR, paired with a PR in Commercial RV, will resolve this issue. The changes made in this PR include a command that modifies a global preference to prevent media from being overwritten while comparing media.

Describe the reason for the change.

User wanted to be able to compare media without overwriting the original media.

Describe what you have tested and on which operating system.

MacOS 14.5 Sonoma