[test] Update a couple of crasher signatures

Author: hamishknight

validation-test/IDE/crashers/FragileFunctionKindRequest-OutputType-dac201.swift

@@ -0,0 +1,3 @@
+// {"kind":"complete","signature":"swift::FragileFunctionKindRequest::evaluate(swift::Evaluator&, swift::DeclContext*) const","signatureAssert":"Assertion failed: (Val && \"isa<> used on a null pointer\"), function doit"}
+// RUN: not --crash %target-swift-ide-test -code-completion -batch-code-completion -skip-filecheck -code-completion-diagnostics -source-filename %s
+case ( <#expression#>= { enum a : #^COMPLETE^#

validation-test/IDE/crashers/FragileFunctionKindRequest-evaluate-dac201.swift

@@ -0,0 +1,3 @@
+// {"kind":"typecheck","signature":"swift::DeclAttribute::attachToDecl(swift::Decl*)","signatureAssert":"Assertion failed: (!OriginalDeclaration || OriginalDeclaration == originalDeclaration && \"Original declaration cannot have already been set\"), function attachToDeclImpl"}
+// RUN: not --crash %target-swift-frontend -typecheck %s
+@differentiable () let a, b

validation-test/compiler_crashers/Decl-attachParsedAttrs-f4e397.swift

@@ -1,3 +1,3 @@
-// {"diagnosticStyle":"llvm","kind":"typecheck","signature":"swift::PrintingDiagnosticConsumer::printDiagnostic(swift::SourceManager&, swift::DiagnosticInfo const&)"}
+// {"diagnosticStyle":"llvm","kind":"typecheck","signature":"swift::PrintingDiagnosticConsumer::printDiagnostic(swift::SourceManager&, swift::DiagnosticInfo const&)","signatureAssert":"Assertion failed: ((size_t)sys::locale::columnWidth(Fixit.getText()) == Fixit.getText().size()), function buildFixItLine"}
 // RUN: not --crash %target-swift-frontend -typecheck -diagnostic-style=llvm %s
 ''

validation-test/compiler_crashers/DeclAttribute-attachToDecl-f4e397.swift

@@ -1,4 +1,4 @@
-// {"kind":"emit-silgen","original":"be1cdd08","signature":"swift::verificationFailure(llvm::Twine const&, swift::SILInstruction const*, swift::SILArgument const*, std::__1::function<void ()> const&)"}
+// {"kind":"emit-silgen","original":"be1cdd08","signature":"swift::verificationFailure(llvm::Twine const&, swift::SILInstruction const*, swift::SILArgument const*, llvm::function_ref<void (swift::SILPrintContext&)>)"}
 // RUN: not --crash %target-swift-frontend -emit-silgen %s
 // REQUIRES: OS=macosx
 import Foundation