Changes in 20210711093642

Built from e5591aaa2cdc8ace99686b1e09bcd5d4c7c39fa6

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Bug 1718819 R[Core:JavaScript Engine]PROCESS-CRASH in green spidermonkey jobs
Bug 1719866 R[Core:JavaScript Engine]Standalone spidermonkey on Windows generates bad shell filename (js.exe91)
Bug 1712400 R[Core:Panning and Zooming]Ensure drag previews are correctly positioned/sized when dragging content inside an OOP iframe with the parent document pinch-zoomed in
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Changes to 3 bugs - 3 fixed.
1 bugs are not included due to being restricted