refactor: Drop FsFile alias, use HalFile in downstream code (#2141)

lib/Xtc/Xtc/XtcParser.cpp

@@ -530,7 +530,7 @@ XtcError XtcParser::loadPageStreaming(uint32_t pageIndex,
 }
 
 bool XtcParser::isValidXtcFile(const char* filepath) {
-  FsFile file;
+  HalFile file;
   if (!Storage.openFileForRead("XTC", filepath, file)) {
     return false;
   }

lib/Xtc/Xtc/XtcParser.h

@@ -84,7 +84,7 @@ class XtcParser {
   XtcError getLastError() const { return m_lastError; }
 
  private:
-  FsFile m_file;
+  HalFile m_file;
   std::string m_filepath;
   bool m_isOpen;
   XtcHeader m_header;