[C++, C#] Tidy up.

Removes superfluous space before SBE_NOEXCEPT specifier in C++.

Tightens access modifiers in C#.

Author: ZachBray

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/cpp/CppGenerator.java

@@ -2222,7 +2222,7 @@ private void generateArrayProperty(
 
             new Formatter(sb).format("\n" +
                 indent + "    #if __cplusplus >= 201703L\n" +
-                indent + "    SBE_NODISCARD std::string_view get%1$sAsStringView() const %6$s\n" +
+                indent + "    SBE_NODISCARD std::string_view get%1$sAsStringView() const%6$s\n" +
                 indent + "    {\n" +
                 "%4$s" +
                 "%5$s" +

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/csharp/CSharpGenerator.java

@@ -256,7 +256,8 @@ private void generateGroupClassHeader(
         }
 
         sb.append("\n")
-            .append(indent).append(INDENT).append("public void NotPresent()\n")
+            // The "file" access modifier is more suitable but only available from C# 11 onwards.
+            .append(indent).append(INDENT).append("internal void NotPresent()\n")
             .append(indent).append(INDENT).append("{\n")
             .append(indent).append(TWO_INDENT).append("_count = 0;\n")
             .append(indent).append(TWO_INDENT).append("_index = 0;\n")
@@ -1875,7 +1876,8 @@ private static void generateAccessOrderListenerMethodForVarDataLength(
         }
 
         sb.append("\n")
-            .append(indent).append("void ").append(accessOrderListenerMethodName(token, "Length")).append("()\n")
+            .append(indent).append("private void ")
+            .append(accessOrderListenerMethodName(token, "Length")).append("()\n")
             .append(indent).append("{\n");
 
         final AccessOrderModel.CodecInteraction accessLength =