[ignition] Add bytecodes for loads/stores in the current context

test/cctest/interpreter/bytecode_expectations/CountOperators.golden

Index: test/cctest/interpreter/bytecode_expectations/CountOperators.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/CountOperators.golden b/test/cctest/interpreter/bytecode_expectations/CountOperators.golden
index 29e0ec358248e3da01641c002d8a5a2e43eac81d..1f170e6de203fe212510f4cbfc433277417a14bf 100644
--- a/test/cctest/interpreter/bytecode_expectations/CountOperators.golden
+++ b/test/cctest/interpreter/bytecode_expectations/CountOperators.golden
@@ -197,18 +197,18 @@ snippet: "
 "
 frame size: 2
 parameter count: 1
-bytecode array length: 27
+bytecode array length: 21
 bytecodes: [
                 B(CreateFunctionContext), U8(1),
                 B(PushContext), R(1),
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(StaContextSlot), R(context), U8(4), U8(0),
+  /*   42 E> */ B(StaLocalContextSlot), U8(4),
   /*   53 S> */ B(CreateClosure), U8(0), U8(2),
                 B(Star), R(0),
-  /*   78 S> */ B(LdaContextSlot), R(context), U8(4), U8(0),
+  /*   78 S> */ B(LdaLocalContextSlot), U8(4),
                 B(Inc), U8(2),
-  /*   87 E> */ B(StaContextSlot), R(context), U8(4), U8(0),
+  /*   87 E> */ B(StaLocalContextSlot), U8(4),
   /*   90 S> */ B(Return),
 ]
 constant pool: [
@@ -223,19 +223,19 @@ snippet: "
 "
 frame size: 3
 parameter count: 1
-bytecode array length: 31
+bytecode array length: 25
 bytecodes: [
                 B(CreateFunctionContext), U8(1),
                 B(PushContext), R(1),
   /*   30 E> */ B(StackCheck),
   /*   42 S> */ B(LdaSmi), U8(1),
-  /*   42 E> */ B(StaContextSlot), R(context), U8(4), U8(0),
+  /*   42 E> */ B(StaLocalContextSlot), U8(4),
   /*   53 S> */ B(CreateClosure), U8(0), U8(2),
                 B(Star), R(0),
-  /*   78 S> */ B(LdaContextSlot), R(context), U8(4), U8(0),
+  /*   78 S> */ B(LdaLocalContextSlot), U8(4),
                 B(ToNumber), R(2),
                 B(Dec), U8(2),
-  /*   86 E> */ B(StaContextSlot), R(context), U8(4), U8(0),
+  /*   86 E> */ B(StaLocalContextSlot), U8(4),
                 B(Ldar), R(2),
   /*   90 S> */ B(Return),
 ]