Add DisallowShadowing rule #1864

Job	Run time
buildAndTest (windows-latest)	2m 48s
buildAndTest (macOS-latest)	2m 51s
buildAndTest (ubuntu-latest)	2m 42s
packReleaseBinaries	0s
testReleaseBinariesInDotNet8Container	0s
testReleaseBinariesWithDotNet10	0s
publishReleaseBinaries	0s
deployReleaseDocs	0s
	8m 21s

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