Re enable tests for operators: OperatorsModule1.fs and OperatorsModul…

…e2.fs (dotnet#9516) (dotnet#9590)

* Re-enabling tests from OperatorsModule1/2.fs (compile errors)

* Fix compile errors in OperatorsModule1/2.fs, fix tests. Note tanh test comment.

* Fix `tanh` test, ensure stable result on x86 vs x64 runtimes

* Stop using exception AssertionException, so that test window shows useful info

* Whitespace cleanup and redundant code removal

* Cleanup spelling etc

* Re-enabling int, int16, int32, int64, nativeint, incr, nullArg etc tests

* Special-case floating-point assertion messages for higher precision output

* Fix/update/add tests (some still failing)

* Separate Checked tests, add & fix others, differentiate framework/bitness for some tests

* Add branch for .NET Native (ignore cos test)

* Resorting to comparing floats with a delta using Assert.AreNearEqual

* Add some more tests

Co-authored-by: Abel Braaksma <abel.online@xs4all.nl>