* upstream/main: (495 commits)
  Disable failing Test1 and Test5 lines (dotnet#78118)
  Update ignored directives public API (dotnet#77968)
  Expression trees: support optional arguments and named arguments in parameter order (dotnet#77972)
  Update resourceManagement.yml (dotnet#77948)
  Split query execution into compile and execute calls (dotnet#78081)
  Remove unused ISemanticSearchWorkspaceHost (dotnet#78083)
  Add back EA.Razor for servicing branches
  Remove EditorFeatures from OOP (dotnet#78069)
  Review feedback
  Fix nullability warnings
  Do not return metadata names for document symbols
  Improve detection of code whose updates may not have effect (dotnet#78009)
  Ensure LSP uses actual signature help trigger characters
  Update RoslynAnalyzer package projects with dependencies
  Simplify analyzer api
  Unseal LSP types (dotnet#78041)
  Compile just for NET
  Fix name
  Docs
  Move type
  ...

* upstream/main:
  Disable failing Test1 and Test5 lines (dotnet#78118)

…ustom-awaiters

* upstream/features/runtime-async: (3563 commits)
  Disable failing Test1 and Test5 lines (dotnet#78118)
  Update ignored directives public API (dotnet#77968)
  Expression trees: support optional arguments and named arguments in parameter order (dotnet#77972)
  Update resourceManagement.yml (dotnet#77948)
  Split query execution into compile and execute calls (dotnet#78081)
  Remove unused ISemanticSearchWorkspaceHost (dotnet#78083)
  Add back EA.Razor for servicing branches
  Remove EditorFeatures from OOP (dotnet#78069)
  Review feedback
  Fix nullability warnings
  Do not return metadata names for document symbols
  Improve detection of code whose updates may not have effect (dotnet#78009)
  Ensure LSP uses actual signature help trigger characters
  Update RoslynAnalyzer package projects with dependencies
  Simplify analyzer api
  Unseal LSP types (dotnet#78041)
  Compile just for NET
  Fix name
  Docs
  Move type
  ...

Backport of #78118 to release/dev17.12

/cc @dibarbet @333fred

## Customer Impact

## Regression

- [ ] Yes
- [ ] No

[If yes, specify when the regression was introduced. Provide the PR or
commit if known.]

## Testing

[How was the fix verified? How was the issue missed previously? What
tests were added?]

## Risk

[High/Medium/Low. Justify the indication by mentioning how risks were
measured and addressed.]

Backport of #78118 to release/dev17.10

/cc @dibarbet @333fred

## Customer Impact

## Regression

- [ ] Yes
- [ ] No

[If yes, specify when the regression was introduced. Provide the PR or
commit if known.]

## Testing

[How was the fix verified? How was the issue missed previously? What
tests were added?]

## Risk

[High/Medium/Low. Justify the indication by mentioning how risks were
measured and addressed.]

basically a backport of #74653, #75561, #78118, and #74261. With an
Arcade update to boot.

basically a backport of #74653, #75561, #71584, and #78118 .