[release/8.0] ComponentModel threading fixes #107353
Merged
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Backport of #104407 and #103835 to release/8.0
See also #107354 for the 6.0 port.
Customer Impact
Fixes various threading issues with TypeDescriptor and PropertyDescriptor.
Regression
Yes; a previous servicing fix caused concurrency issues with:
ConcurrentDictionary
.Testing
The 9.0 tests that were added are ported here.
Risk
Low; the fixes have been in 9.0 for several months with no reported regressions.