Replace `dynamic` wih `object` when substituting constraints.

Fixes #36276.

Merge release/dev16.2-preview3 to master

Fix #33560 Handle equal tokens where Text is not available.

Merge release/dev16.2-preview2 to release/dev16.2-preview3

Reduce dependencies

Extract the RDT implementation for Misc files and VS open file tracker

Merge release/dev16.2-preview3 to master

Address formatting style suggestion.
Co-Authored-By: NGen Lu <genlu@users.noreply.github.com>

Remove support for explicit `object` generic type constraints

See #36401

Fully update the type inferrer and add tests for generate field

Introduces optimizations in lowering for an indexer access of the form
receiver[a..b]. With the optimizations, the generation of intermediate
System.Index and System.Range types will be avoided.

* Dont try and check tuple conversions in error cases:
- When checking an identity converison, also check for a bound tuple if the type isn't a tuple as we might have a bound tuple with an error type
- When checking a tuple conversion, don't GenerateConversion in the error case as we don't have a target type to generate against
- Update tests

The feature requires no extra work, just some tests.

Closes https://github.com/dotnet/roslyn/issues/30323

Update 'Use pattern matching' to recognize other null checks

Merge release/dev16.2-preview3 to master

* Add back constructor to ProjectExternalErrorReporter

* Add missing imports to ProjectExternalErrorReporter

Implement code cleanup for documents

* Added fsharp shims over document diagnostic analyzers

* Added shims for completion and sig help. Also added tests.

* Moved around internal files. Added shim over InlineRenameService.

* Starting shim over document highlights service. Added a better way to handle diagnostics

* Added shim for document highlights service

* Added IFSharpDocumentNavigationService

* Added IFSharpGoToDefinitionService

* Added IFSharpNavigationBarItemService

* Added IFSharpNavigateToSearchService

* Added extra glyph case

* Added FSharpGlyphTags

* Added FSharpCommentSelectionService

* Some cleanup. Added FSharpBlockStructureService

* Added some simple statics

* Finishing the last of shims

* Getting analyzers to work

* Remove folder

* Changes due to feedback

* Fixing build

* Still trying to fix build

* Fixed guid

* Fixing build again