[MAYA-125895] framerate for animated files with set framerate sample will be offset in Maya when checking/unchecking Shareable on the proxy

[santosg87]

Describe the bug

currently, when a user loads the attached file as a stage, there is an offset on the animation when the user checks "unshareable" on the stage.

this might be file specific, as i couldn't reproduce this on a different animated file. but on either case, animation should not be offset when changing the shareable state.

to reproduce this issue:

• load the attached usd file (simpledemo-fps25.usda) a stage.
• uncheck "shareable" on the stage.
• set the timeline range to be from frame 80 to frame 120.
• scrub through the timeline - note that with the stage set to shareable, the band animation is (visibly) started at around frame 97.
• now check the "shareable" option.
• scrubbing through the timeline now has the animation starting at around frame 100 instead.
• note that on (simpledemo-nofps.usda) the animation is the same always.

trying the same steps with a different file seems to have the animation play correctly.
simpledemos.zip

tested using Maya 2023 and Mayausd 0.20.0

[santosg87]

the fix for this is on #2691 :)