fix: tg-forward

[Decodetalkers]

replace tg-forward block to ''

this make tg-forward can be shown

Log:

[Decodetalkers]

@krille-chan I have fixed tg-forward, make the part visible, can you review it?

[krille-chan]

Can you elaborate more what this is about?

[Decodetalkers]

telegram has a message is , the message my side received is like

<tg-forward>
    <blockquote>
message content
   </blockquote>
</tg-forward>

because the xml has <tg-forward> part, the part of <blockquote> can not be rendered, it become empty, then I cannot view the forward message here, so I try to make the keyword to empty , make blockquote be rendered

[q234rty]

I guess this fixed #507 ?

[krille-chan]

I don't think we need two replaceAll methods here. With regex it should be possible to do it in one by selecting the content inside of tg-forward.

[krille-chan]

Instead of doing an expensive .replaceAll() action on all messages, I would prefer to just add tg-forward as another allowed tag and render it the same way as blockquotes