Don't support float enums

Summary:
Changelog: [General][BREAKING] Don't support 'float' enums in Turbo Modules

- The current implementation of 'float enums' in C++ does not work as invalid results are returned.
- At potential fix could still cause rounding errors when crossing language bounaries, e.g. `4.6` can become `4.5599999942..`
- C++ enum classes don't support float: https://eel.is/c++draft/dcl.enum#2.sentence-4

> The type-specifier-seq of an enum-base shall name an integral type; any cv-qualification is ignored.

Hence removing the feature of `float enums` for now

Reviewed By: NickGerleman

Differential Revision: D52120405

fbshipit-source-id: 3685ad0629e16ff9db424ba67e07d09df6027553

packages/rn-tester/NativeCxxModuleExample/NativeCxxModuleExample.cpp

@@ -81,10 +81,10 @@ GraphNode NativeCxxModuleExample::getGraphNode(
   return arg;
 }
 
-NativeCxxModuleExampleCxxEnumFloat NativeCxxModuleExample::getNumEnum(
+NativeCxxModuleExampleCxxEnumInt NativeCxxModuleExample::getNumEnum(
     jsi::Runtime& rt,
     NativeCxxModuleExampleCxxEnumInt arg) {
-  return NativeCxxModuleExampleCxxEnumFloat::FB;
+  return arg;
 }
 
 NativeCxxModuleExampleCxxEnumStr NativeCxxModuleExample::getStrEnum(