It was still relying on the 'ref' directory. Changed it to use the
resource image.

This changes the reference assemblies we use for the CoreClr compiler
compilation to be Net Standard 2.0 RTM. Previously they were a beta
version.

This did mean a number of tests had to be moved to be desktop specific
again. This is primarily due to the presence of ValueTuple as a default
type in Net Standard 2.0. Tests that relied on ValueTuple not being
defined had to be moved to net461 which doesn't have that type defined
by default.

Fixes:#24306

* make sure OOP inherit same culture as VS otherwise culture sensitive resource such as xml doc comment will not work properly

* don't crash on expected issue

On MacOS pipes are implemented using Unix domain sockets. Unix domain
sockets must have a valid file path for their endpoint. The best place
is in the temp folder. Unfortunately, domain sockets on Unix also have a
very small path length limit of 104 characters. In addition, Mac temp
paths can be very long since they include randomly generated characters
from the OS. In total, this means that Roslyn has barely 50 characters
worth of space for its pipe identifiers.

This change cuts down on the bytes of the SHA256 hash used. This shouldn't
affect the security of the pipe, since the hash isn't used as a security boundary,
but should fit the pipe name into the length limitations.

Fixes #24137

* Clean up RemoteHost crash info bar.

this info bars have added one by one in different places without merging those to one. and that caused sometimes similar info bar to show up multiple times.

this merge all to one and make sure it shows up only once if multiple failures are happen (ex, OOP is killed, so multiple connection gets disconnected)

* added soft crash exception