[hir] Rewrite identifiers to be consistent

If we resolve identifiers to be different from the binding, update the binding 
to the new name.

compiler/forget/src/HIR/HIRBuilder.ts

@@ -219,7 +219,11 @@ export default class HIRBuilder {
       }
     }
 
-    return this.resolveBinding(binding.identifier);
+    const resolvedBinding = this.resolveBinding(binding.identifier);
+    if (resolvedBinding.name && resolvedBinding.name !== originalName) {
+      binding.scope.rename(originalName, resolvedBinding.name);
+    }
+    return resolvedBinding;
   }
 
   resolveBinding(node: t.Identifier): Identifier {

compiler/forget/src/__tests__/fixtures/compiler/_bug.lambda-reassign-shadowed-primitive.expect.md

@@ -31,7 +31,7 @@ function Component() {
   const x = t0;
 
   const fn = function () {
-    x = 42;
+    x_0 = 42;
   };
   fn();
   return x;

compiler/forget/src/__tests__/fixtures/compiler/capturing-function-renamed-ref.expect.md

@@ -33,7 +33,7 @@ function component(a, b) {
 
   const z_0 = { b };
   (function () {
-    mutate(z);
+    mutate(z_0);
   })();
   return z;
 }

compiler/forget/src/__tests__/fixtures/compiler/lambda-mutate-shadowed-object.expect.md

@@ -32,7 +32,7 @@ function Component() {
 
   const x_0 = [];
   const fn = function () {
-    mutate(x);
+    mutate(x_0);
   };
   fn();
   return x;