Idle animation fix and Editor script patch

[NovaVoidHowl]

This merge request aims to fix the following two issues:

• Paths were not correctly populated in the notification idle animation, this caused avatar scaling upon switching to that state.
• The editor scripts error out if the VRC SDK3 package is not present.

The fixes included in this merge request, for the above are as follows:

• Recreated the idle animation as it appears to have been in a corrupt state (thus was not taking path updates from the editor script).
• Added dependency filters, to editor script, to disable VRC SDK3 specific features when said package is not detected.

[shadorki]

Thanks I will test this upcoming week and get it merged in!