EnsureTailCallDiagnosticsInRecursiveFunctions: also check nested functions #1811

Job	Run time
buildAndTest (ubuntu-latest)	2m 36s
buildAndTest (windows-latest)	2m 42s
buildAndTest (macOS-latest)	2m 53s
packReleaseBinaries	0s
testReleaseBinariesWithDotNet10	0s
testReleaseBinariesInDotNet8Container	0s
publishReleaseBinaries	-1s
deployReleaseDocs	-1s
	8m 9s

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