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

test/cctest/interpreter/bytecode_expectations/LookupSlot.golden

Index: test/cctest/interpreter/bytecode_expectations/LookupSlot.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/LookupSlot.golden b/test/cctest/interpreter/bytecode_expectations/LookupSlot.golden
index 77ff808468321af6384de1a9bad57eac3daea0fc..8e36d68d63ddeb6c1fe12f007c41ab295acc82d0 100644
--- a/test/cctest/interpreter/bytecode_expectations/LookupSlot.golden
+++ b/test/cctest/interpreter/bytecode_expectations/LookupSlot.golden
@@ -12,16 +12,16 @@ snippet: "
 "
 frame size: 10
 parameter count: 1
-bytecode array length: 73
+bytecode array length: 67
 bytecodes: [
                 B(CreateFunctionContext), U8(3),
                 B(PushContext), R(0),
                 B(Ldar), R(this),
-                B(StaContextSlot), R(context), U8(4), U8(0),
+                B(StaCurrentContextSlot), U8(4),
                 B(CreateMappedArguments),
-                B(StaContextSlot), R(context), U8(6), U8(0),
+                B(StaCurrentContextSlot), U8(6),
                 B(Ldar), R(new_target),
-                B(StaContextSlot), R(context), U8(5), U8(0),
+                B(StaCurrentContextSlot), U8(5),
   /*   10 E> */ B(StackCheck),
   /*   14 S> */ B(LdaConstant), U8(0),
                 B(Star), R(4),
@@ -57,16 +57,16 @@ snippet: "
 "
 frame size: 10
 parameter count: 1
-bytecode array length: 74
+bytecode array length: 68
 bytecodes: [
                 B(CreateFunctionContext), U8(3),
                 B(PushContext), R(0),
                 B(Ldar), R(this),
-                B(StaContextSlot), R(context), U8(4), U8(0),
+                B(StaCurrentContextSlot), U8(4),
                 B(CreateMappedArguments),
-                B(StaContextSlot), R(context), U8(6), U8(0),
+                B(StaCurrentContextSlot), U8(6),
                 B(Ldar), R(new_target),
-                B(StaContextSlot), R(context), U8(5), U8(0),
+                B(StaCurrentContextSlot), U8(5),
   /*   10 E> */ B(StackCheck),
   /*   14 S> */ B(LdaConstant), U8(0),
                 B(Star), R(4),
@@ -103,16 +103,16 @@ snippet: "
 "
 frame size: 10
 parameter count: 1
-bytecode array length: 73
+bytecode array length: 67
 bytecodes: [
                 B(CreateFunctionContext), U8(3),
                 B(PushContext), R(0),
                 B(Ldar), R(this),
-                B(StaContextSlot), R(context), U8(4), U8(0),
+                B(StaCurrentContextSlot), U8(4),
                 B(CreateMappedArguments),
-                B(StaContextSlot), R(context), U8(6), U8(0),
+                B(StaCurrentContextSlot), U8(6),
                 B(Ldar), R(new_target),
-                B(StaContextSlot), R(context), U8(5), U8(0),
+                B(StaCurrentContextSlot), U8(5),
   /*   10 E> */ B(StackCheck),
   /*   14 S> */ B(LdaSmi), U8(20),
   /*   16 E> */ B(StaLookupSlotSloppy), U8(0),
@@ -154,16 +154,16 @@ snippet: "
 "
 frame size: 10
 parameter count: 1
-bytecode array length: 73
+bytecode array length: 67
 bytecodes: [
                 B(CreateFunctionContext), U8(3),
                 B(PushContext), R(0),
                 B(Ldar), R(this),
-                B(StaContextSlot), R(context), U8(4), U8(0),
+                B(StaCurrentContextSlot), U8(4),
                 B(CreateMappedArguments),
-                B(StaContextSlot), R(context), U8(6), U8(0),
+                B(StaCurrentContextSlot), U8(6),
                 B(Ldar), R(new_target),
-                B(StaContextSlot), R(context), U8(5), U8(0),
+                B(StaCurrentContextSlot), U8(5),
   /*   38 E> */ B(StackCheck),
   /*   44 S> */ B(LdaConstant), U8(0),
                 B(Star), R(4),
@@ -204,16 +204,16 @@ snippet: "
 "
 frame size: 10
 parameter count: 1
-bytecode array length: 73
+bytecode array length: 67
 bytecodes: [
                 B(CreateFunctionContext), U8(3),
                 B(PushContext), R(0),
                 B(Ldar), R(this),
-                B(StaContextSlot), R(context), U8(4), U8(0),
+                B(StaCurrentContextSlot), U8(4),
                 B(CreateMappedArguments),
-                B(StaContextSlot), R(context), U8(6), U8(0),
+                B(StaCurrentContextSlot), U8(6),
                 B(Ldar), R(new_target),
-                B(StaContextSlot), R(context), U8(5), U8(0),
+                B(StaCurrentContextSlot), U8(5),
   /*   34 E> */ B(StackCheck),
   /*   40 S> */ B(LdaConstant), U8(0),
                 B(Star), R(4),