MIPS[64]: Fix `[builtins]: Uniformly push argument count in TF-generated builtins`

src/compiler/mips64/code-generator-mips64.cc

Index: src/compiler/mips64/code-generator-mips64.cc
diff --git a/src/compiler/mips64/code-generator-mips64.cc b/src/compiler/mips64/code-generator-mips64.cc
index 1ce1c5428bdafc0356eb34ac17b35f29f8e99102..dc4d414c6089906e46c49334af092dbedd9dd926 100644
--- a/src/compiler/mips64/code-generator-mips64.cc
+++ b/src/compiler/mips64/code-generator-mips64.cc
@@ -2239,6 +2239,9 @@ void CodeGenerator::AssembleConstructFrame() {
       __ mov(fp, sp);
     } else if (descriptor->IsJSFunctionCall()) {
       __ Prologue(this->info()->GeneratePreagedPrologue());
+      if (descriptor->PushArgumentCount()) {
+        __ Push(kJavaScriptCallArgCountRegister);
+      }
     } else {
       __ StubPrologue(info()->GetOutputStackFrameType());
     }