Add support for default implementation of static virtuals with method constraints

[davidwrighton]

• The major problem was the logic which incorrectly would instantiate the methods when it wasn't necessary
• As the number of flags to the implementation functions has grown very large, this change also includes logic converting them all to a single flags variable when passing them around

Fixes #73658
Fixes #78865

[Joe4evr]

Did this not get into preview 7 somehow? I ran my code that previously encountered #73658 and I'm still getting a VerificationException when calling GetInterfaceMap.

Additionally, in trying to make a minimized repo I'm encountering more bugs around getting a target method through reflection (at least one of which is also in .NET 7). Should I open a new issue for these? @AaronRobinsonMSFT @davidwrighton

[AaronRobinsonMSFT]

@Joe4evr Can you try the nightly from https://github.com/dotnet/installer#table. I'm not sure if these fixes made it into preview 7.

[AaronRobinsonMSFT]

If you are still hitting issues after trying the nightly, then please open a new issue.

[Joe4evr]

@Joe4evr Can you try the nightly from https://github.com/dotnet/installer#table. I'm not sure if these fixes made it into preview 7.

Ah, thanks for that. Looks like I was concerned for nothing. That rc1 build does work in all the scenarios I tested.