Fix: When generated TS class name is "Error", it is conflicting with TS Error class

[doruk-info]

Where one of the generated class name is "Error" it cause confusion to throw new Error(...) operations and causing the build to fail.

Following is example build failure message:

ERROR in ./src/api/index.ts:3008:29
TS2559: Type '"The parameter 'foo' must be defined."' has no properties in common with type 'IError'.
    3006 |         let url_ = this.baseUrl + "/foo";
    3007 |         if (foo === undefined || foo === null)
  > 3008 |             throw new Error("The parameter 'foo' must be defined.");
         |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

This is because generated class "Error" accepts IError generated interface in ctor.

To resolve this issue we can use globalThis.Error when generating request bodies.