Apply toPropertyKey on decorator context name (#16139)

* refactor: extract toPrimitive and toProeprtyKey to single helpers

* update test fixtures

* apply toPropertyKey for decorator context name

* fix: allow BigIntLiteral in ClassMethod.key

* Add 2021-12 test cases

* copy paste to other versions

* Suppress TS error

* Update packages/babel-helpers/src/helpers/toPrimitive.ts

Co-authored-by: liuxingbaoyu <[email protected]>

* update generated helpers

* update test fixtures

---------

Co-authored-by: liuxingbaoyu <[email protected]>

Author: JLHwung

packages/babel-helpers/src/helpers-generated.ts

@@ -865,31 +865,6 @@ helpers.skipFirstGeneratorNext = helper("7.0.0-beta.0")`
   }
 `;
 
-helpers.toPrimitive = helper("7.1.5")`
-  export default function _toPrimitive(
-    input,
-    hint /*: "default" | "string" | "number" | void */
-  ) {
-    if (typeof input !== "object" || input === null) return input;
-    var prim = input[Symbol.toPrimitive];
-    if (prim !== undefined) {
-      var res = prim.call(input, hint || "default");
-      if (typeof res !== "object") return res;
-      throw new TypeError("@@toPrimitive must return a primitive value.");
-    }
-    return (hint === "string" ? String : Number)(input);
-  }
-`;
-
-helpers.toPropertyKey = helper("7.1.5")`
-  import toPrimitive from "toPrimitive";
-
-  export default function _toPropertyKey(arg) {
-    var key = toPrimitive(arg, "string");
-    return typeof key === "symbol" ? key : String(key);
-  }
-`;
-
 /**
  * Add a helper that will throw a useful error if the transform fails to detect the class
  * property assignment, so users know something failed.