Fix MSVC compile error in BitstreamRemarkParser.h when targeting C++17

The following errors are seen in our builds using MSVC 2022:

BitstreamRemarkParser.h(115): error C2990: 'llvm::remarks::BitstreamBlockParserHelper': non-class template has already been declared as a class template
BitstreamRemarkParser.h(66): note: see declaration of 'llvm::remarks::BitstreamBlockParserHelper'

This change fixes the build issue by adding an explicit template
argument to the `friend class` statements.

This issue is not seen if using `-std:c++20`, but we still support
building as C++17.

Author: jholewinski-nv

llvm/lib/Remarks/BitstreamRemarkParser.h

@@ -112,7 +112,7 @@ class BitstreamBlockParserHelper : public BitstreamBlockParserHelperBase {
 /// Helper to parse a META_BLOCK for a bitstream remark container.
 class BitstreamMetaParserHelper
     : public BitstreamBlockParserHelper<BitstreamMetaParserHelper> {
-  friend class BitstreamBlockParserHelper;
+  friend class BitstreamBlockParserHelper<BitstreamMetaParserHelper>;
 
 public:
   struct ContainerInfo {
@@ -137,7 +137,7 @@ class BitstreamMetaParserHelper
 /// Helper to parse a REMARK_BLOCK for a bitstream remark container.
 class BitstreamRemarkParserHelper
     : public BitstreamBlockParserHelper<BitstreamRemarkParserHelper> {
-  friend class BitstreamBlockParserHelper;
+  friend class BitstreamBlockParserHelper<BitstreamRemarkParserHelper>;
 
 protected:
   SmallVector<uint64_t, 5> Record;