[babel] Invoke gating module as a call expression

This is incredibly obvious in hindsight, but for exposure logging to work 
correctly we need to *call* the underlying `MobileConfig.getBool` function at 
the callsite – otherwise the bool is evaluated once (and only once) when the 
module is loaded. 

Tested internally and verified that in dogfooding the exposure logging was 
working correctly

compiler/forget/src/Babel/BabelPlugin.ts

@@ -237,7 +237,11 @@ function buildTest(ids: {
   return t.variableDeclaration("const", [
     t.variableDeclarator(
       ids.original,
-      t.conditionalExpression(testId, ids.compiled, ids.uncompiled)
+      t.conditionalExpression(
+        t.callExpression(testId, []),
+        ids.compiled,
+        ids.uncompiled
+      )
     ),
   ]);
 }

compiler/forget/src/__tests__/fixtures/compiler/arrow-function-expr-gating-test.expect.md

@@ -29,7 +29,7 @@ function ErrorView_forget(error, _retry) {
   }
   return t0;
 }
-const ErrorView = isForgetEnabled ? ErrorView_forget : ErrorView_uncompiled;
+const ErrorView = isForgetEnabled() ? ErrorView_forget : ErrorView_uncompiled;
 
 export default ErrorView;
 

compiler/forget/src/__tests__/fixtures/compiler/gating-test-export-default-function.expect.md

@@ -40,7 +40,7 @@ function Bar_forget(props) {
   }
   return t0;
 }
-const Bar = isForgetEnabled ? Bar_forget : Bar_uncompiled;
+const Bar = isForgetEnabled() ? Bar_forget : Bar_uncompiled;
 export default Bar;
 
 function NoForget(props) {
@@ -64,7 +64,7 @@ function Foo_forget(props) {
   }
   return t0;
 }
-const Foo = isForgetEnabled ? Foo_forget : Foo_uncompiled;
+const Foo = isForgetEnabled() ? Foo_forget : Foo_uncompiled;
 
 ```
       

compiler/forget/src/__tests__/fixtures/compiler/gating-test-export-function-and-default.expect.md

@@ -40,7 +40,7 @@ function Bar_forget(props) {
   }
   return t0;
 }
-const Bar = isForgetEnabled ? Bar_forget : Bar_uncompiled;
+const Bar = isForgetEnabled() ? Bar_forget : Bar_uncompiled;
 export default Bar;
 
 function NoForget(props) {
@@ -64,7 +64,7 @@ function Foo_forget(props) {
   }
   return t0;
 }
-export const Foo = isForgetEnabled ? Foo_forget : Foo_uncompiled;
+export const Foo = isForgetEnabled() ? Foo_forget : Foo_uncompiled;
 
 ```
       

compiler/forget/src/__tests__/fixtures/compiler/gating-test-export-function.expect.md

@@ -40,7 +40,7 @@ function Bar_forget(props) {
   }
   return t0;
 }
-export const Bar = isForgetEnabled ? Bar_forget : Bar_uncompiled;
+export const Bar = isForgetEnabled() ? Bar_forget : Bar_uncompiled;
 
 export function NoForget(props) {
   return <Bar>{props.noForget}</Bar>;
@@ -63,7 +63,7 @@ function Foo_forget(props) {
   }
   return t0;
 }
-export const Foo = isForgetEnabled ? Foo_forget : Foo_uncompiled;
+export const Foo = isForgetEnabled() ? Foo_forget : Foo_uncompiled;
 
 ```
       

compiler/forget/src/__tests__/fixtures/compiler/gating-test.expect.md

@@ -40,7 +40,7 @@ function Bar_forget(props) {
   }
   return t0;
 }
-const Bar = isForgetEnabled ? Bar_forget : Bar_uncompiled;
+const Bar = isForgetEnabled() ? Bar_forget : Bar_uncompiled;
 
 function NoForget(props) {
   return <Bar>{props.noForget}</Bar>;
@@ -63,7 +63,7 @@ function Foo_forget(props) {
   }
   return t0;
 }
-const Foo = isForgetEnabled ? Foo_forget : Foo_uncompiled;
+const Foo = isForgetEnabled() ? Foo_forget : Foo_uncompiled;
 
 ```
       

compiler/forget/src/__tests__/fixtures/compiler/multi-arrow-expr-export-gating-test.expect.md

@@ -34,7 +34,7 @@ function ErrorView_forget(error, _retry) {
   }
   return t0;
 }
-const ErrorView = isForgetEnabled ? ErrorView_forget : ErrorView_uncompiled;
+const ErrorView = isForgetEnabled() ? ErrorView_forget : ErrorView_uncompiled;
 function Renderer_uncompiled(props) {
   return (
     <Foo>
@@ -73,7 +73,9 @@ function Renderer_forget(props) {
   }
   return t2;
 }
-export const Renderer = isForgetEnabled ? Renderer_forget : Renderer_uncompiled;
+export const Renderer = isForgetEnabled()
+  ? Renderer_forget
+  : Renderer_uncompiled;
 
 ```
       

compiler/forget/src/__tests__/fixtures/compiler/multi-arrow-expr-gating-test.expect.md

@@ -36,7 +36,7 @@ function ErrorView_forget(error, _retry) {
   }
   return t0;
 }
-const ErrorView = isForgetEnabled ? ErrorView_forget : ErrorView_uncompiled;
+const ErrorView = isForgetEnabled() ? ErrorView_forget : ErrorView_uncompiled;
 function Renderer_uncompiled(props) {
   return (
     <Foo>
@@ -75,7 +75,7 @@ function Renderer_forget(props) {
   }
   return t2;
 }
-const Renderer = isForgetEnabled ? Renderer_forget : Renderer_uncompiled;
+const Renderer = isForgetEnabled() ? Renderer_forget : Renderer_uncompiled;
 export default Renderer;
 
 ```