Tuple types are still causing Hydra Typegen to fail

[Lezek123]

Hydra version: 3.0.0-beta.6

After the fix in #373, there is still an issue in the generated files:

    export class PostDeletedEvent {
        public readonly expectedParamTypes = ['Vec<u8>', 'ForumUserId', 'Vec<(CategoryId, ThreadId, PostId, bool)>', ]

        constructor(public readonly ctx: SubstrateEvent) {}

        get params(): [Bytes,ForumUserId,Vec<(CategoryId,ThreadId,PostId,bool)>] {
            

            return [createTypeUnsafe<Bytes & Codec>(
            typeRegistry, 'Bytes', [this.ctx.params[0].value]) ,
createTypeUnsafe<ForumUserId & Codec>(
            typeRegistry, 'ForumUserId', [this.ctx.params[1].value]) ,
createTypeUnsafe<Vec<(CategoryId,ThreadId,PostId,bool)> & Codec>(
            typeRegistry, 'Vec<(CategoryId,ThreadId,PostId,bool)>', [this.ctx.params[2].value]) ]
        }
        /* ... */

For example:

[error] mappings/generated/types/forum.ts: SyntaxError: '=>' expected. (454:79)
[error]   452 |         constructor(public readonly ctx: SubstrateEvent) {}
[error]   453 | 
[error] > 454 |         get params(): [Bytes,ForumUserId,Vec<(CategoryId,ThreadId,PostId,bool)>] {