nanobench: Use device independent font flag for GPU configs

Actually use the device independent font flag that the user passes
via "--config 'gpu(dit=true,...)'"
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1747173002

Review URL: https://codereview.chromium.org/1747173002

bench/nanobench.cpp

@@ -414,14 +414,15 @@ static void create_config(const SkCommandLineConfig* config, SkTArray<Config>* c
         }
 
         Config target = {
-            config->getTag(),
+            gpuConfig->getTag(),
             Benchmark::kGPU_Backend,
             kN32_SkColorType,
             kPremul_SkAlphaType,
             sampleCount,
             ctxType,
-            ctxOptions,        
-            false };
+            ctxOptions,
+            gpuConfig->getUseDIText()
+        };
 
         configs->push_back(target);
         return;