#non-constant delta time in PresentMode::AutoVsync and Immediate

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solid geode
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Time.delta_seconds() in AutoVsync is average 0.1, but in PresentMode::Immediate it is average 0.01.

fierce egret
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from https://github.com/bevyengine/bevy/blob/3281aea5c23495664c8c5dbd1bec57b0ca41f359/crates/bevy_window/src/window.rs#L676:
Presentation mode for a window.

The presentation mode specifies when a frame is presented to the window. The Fifo
option corresponds to a traditional VSync, where the framerate is capped by the
display refresh rate. Both Immediate and Mailbox are low-latency and are not
capped by the refresh rate, but may not be available on all platforms. Tearing
may be observed with Immediate mode, but will not be observed with Mailbox or
Fifo.