[lldb][DemangledNameInfo] Fix tracking of template arugments

Depends on:
* llvm#166577

The `isGtInsideTemplateArgs` wasn't the correct API to use for answering
whether we are currently printing template arugments. One example is:
```
void func<(foo::Enum)1>()
```
Here `OutputBuffer::GtIsGt > 0` despite us being inside template arguments (because we incremented it when seeing '(').

This patch now uses the correct API and adds the above as a test-case.

Author: Michael137

lldb/source/Core/DemangledNameInfo.cpp

@@ -16,7 +16,7 @@ bool TrackingOutputBuffer::shouldTrack() const {
   if (!isPrintingTopLevelFunctionType())
     return false;
 
-  if (isGtInsideTemplateArgs())
+  if (isInsideTemplateArgs())
     return false;
 
   if (NameInfo.ArgumentsRange.first > 0)
@@ -29,7 +29,7 @@ bool TrackingOutputBuffer::canFinalize() const {
   if (!isPrintingTopLevelFunctionType())
     return false;
 
-  if (isGtInsideTemplateArgs())
+  if (isInsideTemplateArgs())
     return false;
 
   if (NameInfo.ArgumentsRange.first == 0)

lldb/unittests/Core/MangledTest.cpp

@@ -636,6 +636,16 @@ DemanglingPartsTestCase g_demangling_parts_test_cases[] = {
      /*.basename=*/"operator()",
      /*.scope=*/"dyld4::Loader::runInitializersBottomUpPlusUpwardLinks(dyld4::RuntimeState&) const::$_0::",
      /*.qualifiers=*/" const",
+   },
+   {"_Z4funcILN3foo4EnumE1EEvv",
+     {
+       /*.BasenameRange=*/{5, 9}, /*.TemplateArgumentsRange=*/{9, 23}, /*.ScopeRange=*/{5, 5},
+       /*.ArgumentsRange=*/{23, 25}, /*.QualifiersRange=*/{25, 25}, /*.NameQualifiersRange=*/{0, 0},
+       /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{0, 0}
+     },
+     /*.basename=*/"func",
+     /*.scope=*/"",
+     /*.qualifiers=*/"",
    }
     // clang-format on
 };